CN104454028A - Method for improving running efficiency of steam turbine generator unit in heat supply season - Google Patents
Method for improving running efficiency of steam turbine generator unit in heat supply season Download PDFInfo
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- CN104454028A CN104454028A CN201410644619.6A CN201410644619A CN104454028A CN 104454028 A CN104454028 A CN 104454028A CN 201410644619 A CN201410644619 A CN 201410644619A CN 104454028 A CN104454028 A CN 104454028A
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- season
- heat supply
- steam turbine
- turbine generator
- partition plate
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Abstract
The invention discloses a method for improving the running efficiency of a steam turbine generator unit in the heat supply season. A diversion partition plate is manufactured and arranged in a low-pressure cylinder instead of a partition plate which is taken down, and therefore a low-pressure through-flow steam passageway can be smooth, and the running efficiency of the steam turbine generator unit in the heat supply season can be improved. Meanwhile, the requirement for the structural universality is met, only blades and impellers at the last 2 to 3 work levels of low pressure need to be detached and installed when two backpressure running states are switched, the diversion partition plate and the existing partition plate are exchanged, the running state switching is easy, convenient and rapid, downtime is short, and the economic benefits of power plants are remarkably improved.
Description
Technical field
The present invention relates to Turbo-generator Set, particularly relate to a kind of method improving Turbo-generator Set heating operational efficiency in season, belong to thermal power generating technology field.
Background technique
In recent years, along with national electric load is day by day full, city winter heating demand increases fast, increasing power plant is in order to increase economic efficiency, sacrificial section unit output in the winter time, reduce generated output, heating is provided to city, heating steam low pressure steam discharge, in order to meet the pressure requirements of heating steam, high back pressure transformation need be carried out to unit, specific practice is, switch condenser cooling water source, again the blade of the low pressure several work done level in end (normally 2-3 level), impeller, dividing plate is dismantled, after heating terminates season, again load onto again, unit recovers full power generating.Problem is, after the blade of the several work done level in low pressure end, impeller, dividing plate are dismantled, the not fairing of low pressure flow passage steam passage, vapor stream is disorderly, causes unit efficiency to reduce.
Summary of the invention
For the problems referred to above, the invention provides a kind of method improving Turbo-generator Set heating operational efficiency in season, its technical solution is:
Manufacture a set of diaphragm, substitute by the dividing plate of dismantling, load in low pressure (LP) cylinder, make the fairing of low pressure flow passage steam passage.
Described diaphragm comprises inner cylinder, outer cone cylinder, lacing wire, and it is overall that described inner cylinder, outer cone cylinder are connected by lacing wire.
Described diaphragm is upper and lower point of half structure.
Described diaphragm is segmentation segmental structure.
Beneficial effect of the present invention:
By above-mentioned transformation, make the fairing of low pressure flow passage steam passage, improve the operational efficiency of unit heating heating season; Meanwhile, meet the versatility of structure, when two kinds of back pressure operation State Transferring, only need disassemble or assemble blade, impeller, diaphragm and septum primum plate are exchanged, running state conversion is simple and efficient, and dead time is short, and the economic benefit of power plant increases significantly.
Accompanying drawing explanation
Fig. 1 is second structural representation of diaphragm of the present invention
Fig. 2 is first structural representation of diaphragm of the present invention
Fig. 3 is diaphragm of the present invention assembly relation schematic diagram in low pressure (LP) cylinder
Fig. 4 is segmented diaphragm of the present invention assembly relation schematic diagram in low pressure (LP) cylinder.
Embodiment
For implementing the present invention, first a set of diaphragm to be manufactured.
See Fig. 1, Fig. 2: this diaphragm comprises inner cylinder 3, outer cone cylinder 1, is welded as entirety by lacing wire 2, according to the conventional structure of steam turbine stator, be designed to upper and lower point of half structure, so that hoisting rotor during unit assembling.
See figure: during winter approached, height is carried out by pressure transformation to unit, blade, the impeller of low pressure end 2-3 level on rotor of dismantling, the dividing plate of low pressure (LP) cylinder end 2-3 level of dismantling, then diaphragm is loaded low pressure (LP) cylinder, substitute by the dividing plate of dismantling.When installing diaphragm, its smaller diameter end is admission end, and larger diameter end is steam output end, form a trumpet-shaped low pressure flow passage steam passage, by the constraint of outer cone cylinder 1, vapor flow is smooth, clear and coherent, can not be disorderly, remain wadding stream mode, thus ensure that the operational efficiency of unit can not reduce.
See Fig. 4: consider that the physical dimension of diaphragm is very large, weight is large, diaphragm can be designed to two sections, to lift.Two sections are closely connected, and connecting part adopts seam bridging arrangement, has both kept steam passage smooth transition, and has prevented again steam from leaking from seam.
After heating terminates season, pull down diaphragm, again load onto septum primum plate and blade, impeller, unit recovers full power generating.
Adopt above technological means, make unit after high back pressure transformation, the still fairing of low pressure flow passage steam passage, improves the operational efficiency of unit heating heating season; Meanwhile, meet the versatility of structure, when two kinds of back pressure operation State Transferring, only need disassemble or assemble blade, impeller, diaphragm and septum primum plate are exchanged, running state conversion is simple and efficient, and dead time is short, and the economic benefit of power plant increases significantly.
Claims (4)
1. improve a method for Turbo-generator Set heating operational efficiency in season, manufacture a set of diaphragm, substitute by the dividing plate of dismantling, load in low pressure (LP) cylinder, make the fairing of low pressure flow passage steam passage.
2. the method improving Turbo-generator Set heating operational efficiency in season as claimed in claim 1, it is characterized in that, described diaphragm comprises inner cylinder, outer cone cylinder, lacing wire, and it is overall that described inner cylinder, outer cone cylinder are connected by lacing wire.
3. the method improving Turbo-generator Set heating operational efficiency in season as claimed in claim 2, it is characterized in that, described diaphragm is upper and lower point of half structure.
4. the method improving Turbo-generator Set heating operational efficiency in season as claimed in claim 3, is characterized in that, described diaphragm segmental structure
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644619.6A CN104454028A (en) | 2014-11-14 | 2014-11-14 | Method for improving running efficiency of steam turbine generator unit in heat supply season |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644619.6A CN104454028A (en) | 2014-11-14 | 2014-11-14 | Method for improving running efficiency of steam turbine generator unit in heat supply season |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104454028A true CN104454028A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410644619.6A Pending CN104454028A (en) | 2014-11-14 | 2014-11-14 | Method for improving running efficiency of steam turbine generator unit in heat supply season |
Country Status (1)
| Country | Link |
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| CN (1) | CN104454028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339873A (en) * | 2018-09-30 | 2019-02-15 | 东方电气集团东方汽轮机有限公司 | Last stage vane of steam turbine protective device for high back pressure heat supply |
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| JPH06101410A (en) * | 1992-09-22 | 1994-04-12 | Toshiba Corp | Nozzle for steam turbine |
| CN2352678Y (en) * | 1998-10-30 | 1999-12-08 | 赵肃铭 | Low pressure grade double layer steam channel type stator blades mechanism for condenser steam turbine |
| CN1308706A (en) * | 1998-06-12 | 2001-08-15 | 株式会社荏原制作所 | Turbine nozzle vane |
| CN1318686A (en) * | 2000-04-18 | 2001-10-24 | 诺沃皮尼奥内控股有限公司 | Method for manufacturing stator baffle in steam turbine and produced stator baffle |
| CN2570462Y (en) * | 2002-09-19 | 2003-09-03 | 何坚忍 | Large-scale heat supply and power-generating turbine separate high and low pressure cylinder arrangement |
| CN101059083A (en) * | 2006-04-21 | 2007-10-24 | 通用电气公司 | Apparatus and method of diaphragm assembly |
| CN101598036A (en) * | 2009-07-10 | 2009-12-09 | 北京航空航天大学 | Flow control method in a kind of large expansion angle channel |
| CN201851169U (en) * | 2010-11-16 | 2011-06-01 | 山东齐鲁电机制造有限公司 | Novel low-pressure stage straight-welding type static blade separating plate for steam turbine |
| CN103790643A (en) * | 2014-02-11 | 2014-05-14 | 上海电气电站设备有限公司 | Method for improving steam exhaust parameters of turbine |
-
2014
- 2014-11-14 CN CN201410644619.6A patent/CN104454028A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06101410A (en) * | 1992-09-22 | 1994-04-12 | Toshiba Corp | Nozzle for steam turbine |
| CN1308706A (en) * | 1998-06-12 | 2001-08-15 | 株式会社荏原制作所 | Turbine nozzle vane |
| CN2352678Y (en) * | 1998-10-30 | 1999-12-08 | 赵肃铭 | Low pressure grade double layer steam channel type stator blades mechanism for condenser steam turbine |
| CN1318686A (en) * | 2000-04-18 | 2001-10-24 | 诺沃皮尼奥内控股有限公司 | Method for manufacturing stator baffle in steam turbine and produced stator baffle |
| CN2570462Y (en) * | 2002-09-19 | 2003-09-03 | 何坚忍 | Large-scale heat supply and power-generating turbine separate high and low pressure cylinder arrangement |
| CN101059083A (en) * | 2006-04-21 | 2007-10-24 | 通用电气公司 | Apparatus and method of diaphragm assembly |
| CN101598036A (en) * | 2009-07-10 | 2009-12-09 | 北京航空航天大学 | Flow control method in a kind of large expansion angle channel |
| CN201851169U (en) * | 2010-11-16 | 2011-06-01 | 山东齐鲁电机制造有限公司 | Novel low-pressure stage straight-welding type static blade separating plate for steam turbine |
| CN103790643A (en) * | 2014-02-11 | 2014-05-14 | 上海电气电站设备有限公司 | Method for improving steam exhaust parameters of turbine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339873A (en) * | 2018-09-30 | 2019-02-15 | 东方电气集团东方汽轮机有限公司 | Last stage vane of steam turbine protective device for high back pressure heat supply |
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Application publication date: 20150325 |