CN105370329A - Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine - Google Patents
Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine Download PDFInfo
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- CN105370329A CN105370329A CN201510889330.5A CN201510889330A CN105370329A CN 105370329 A CN105370329 A CN 105370329A CN 201510889330 A CN201510889330 A CN 201510889330A CN 105370329 A CN105370329 A CN 105370329A
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- Prior art keywords
- pressure
- medium
- internal cylinder
- steam
- integrated
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Classifications
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
Abstract
The invention discloses a novel integrated high-medium-pressure internal cylinder applied to a supercritical steam turbine, relating to a high-medium-pressure internal cylinder structure of a steam turbine and aims at solving the problems of low high-medium-pressure through flow efficiency, unit heat consumption increment and low assembly efficiency caused by an assembling gap existing between both assembly surfaces of a high-pressure part and a medium-pressure part of the existing supercritical steam turbine unit. The high-medium-pressure internal cylinder, a high-pressure diaphragm sleeve and a 1# medium-pressure diaphragm sleeve are integrated, and a vane of the high-pressure part is directly arranged on the high-medium-pressure internal cylinder. A high-pressure steam inlet, a medium-pressure steam inlet, a 0# high-pressure heater steam extraction opening, a 1# high-pressure heater steam extraction opening, a high-medium-pressure steam inlet side balancing hole and a diaphragm slot are integrated into an integrated part. Due to the adoption of the integrated structure of the novel integrated high-medium-pressure internal cylinder, the efficiencies of the high-pressure part and the medium-pressure part of the unit are increased, steam leakage loss is reduced, the heat consumption of the whole unit is reduced, and the benefit of a power plant is increased; in addition, the high-medium-pressure assembly can be reduced, the processibility is good, the final assembly is simple, time and labor are saved, and the field installation period is shortened. The novel integrated high-medium-pressure internal cylinder is suitable for the supercritical steam turbine.
Description
Technical field
The invention belongs to steam turbine high pressure inner casing construction applications.
Background technique
The high pressure part of existing supercritical unit has a lot of assembling portions cover, and portion's cover and portion exist mating face between overlap, have fit up gap between mating face, and when making unit operation, Steam loss increases, and the efficiency of reduction unit, adds unit hear rate.And owing to overlapping more in the portion of assembling, the inefficiency of general assembly, the complex structure of unit, unit processing and installation are wasted time and energy, and increase cost.
Summary of the invention
The present invention is that high pressure part in order to solve existing supercritical steam turbine units is because existing fit up gap between each mating face, the efficiency causing high pressure through-flow is low, unit hear rate increases, and the problem that efficiency of assembling is low, the invention provides a kind of novel overall high pressure inner casing being applied to supercritical pressure turbine.
A kind of novel overall high pressure inner casing being applied to supercritical pressure turbine of the present invention, comprise high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7, described high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7 is integrated part, and the blade of high-pressure section is directly installed on high pressure inner casing 1.
High-pressure admission mouth, in compress into steam ports, No. 0 high-pressure heater extraction opening 2, No. 1 high-pressure heater extraction opening 3, high pressure steam admission side equalizing orifice and septalium are integrated part.
The present invention compared with prior art has following effect: 1. the overall structure of high pressure inner casing of the present invention improves the efficiency of the high pressure part of unit, reduces leakage losses, reduces the hear rate of whole unit, improves the benefit of power plant.2. can reduce department of assembly's cover of high pressure, good manufacturability, general assembly is simply time saving and energy saving, shortens the in-site installation cycle.3. high pressure inner casing compact structure of the present invention, Safety performance is high, and reliability is high, can ensure unit safety operation, be applicable to supercritical pressure turbine.
Accompanying drawing explanation
Fig. 1 is a kind of internal structure schematic diagram being applied to the novel overall high pressure inner casing of supercritical pressure turbine described in mode of execution;
Fig. 2 is a kind of external structure schematic diagram being applied to the novel overall high pressure inner casing of supercritical pressure turbine described in mode of execution;
Fig. 3 is the structural representation of the high pressure inner casing in background technique, and in figure, 4 represent High-and-medium Pressure Outer Casing, and 6 represent high-pressure nozzle box, pressure No. 2 diaphragm housing rings in 8 expressions, 9 represent main steam leads, and 10 represent main steam imports, 11 represent reheated steam import, and 12 represent high pressure steam admission side gimbal.
Embodiment
Embodiment one: present embodiment is described see Fig. 1 to Fig. 3, a kind of novel overall high pressure inner casing being applied to supercritical pressure turbine described in present embodiment, comprise high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7, described high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7 is integrated part, and the blade of high-pressure section is directly installed on high pressure inner casing 1.
High pressure inner casing is cast inblock structure, and the blade of flow passage component is directly fixed on high pressure inner casing, and reduce department of assembly's cover, structure is simple, and machining is time saving and energy saving with installation, and set structure is simple.Decrease the assembling between portion's cover, Site for Unit assembling cycle obviously shortens.Decrease the leakage vapour that portion's inner room produces because there is fit up gap, Steam loss reduces, and improves the efficiency of high pressure part, reduces the hear rate of unit, improves Economy.
Embodiment two: present embodiment is to a kind of further restriction being applied to the novel overall high pressure inner casing of supercritical pressure turbine described in embodiment one, in present embodiment, high-pressure admission mouth, in compress into steam ports, No. 0 high-pressure heater extraction opening 2, No. 1 high-pressure heater extraction opening 3, high pressure steam admission side equalizing orifice and septalium are integrated part.
Present embodiment can reduce Steam loss further, improves the efficiency of high pressure part, reduces the hear rate of unit, improves Economy.
Claims (2)
1. one kind is applied to the novel overall high pressure inner casing of supercritical pressure turbine, comprise high pressure inner casing (1), high pressure blade ring (5) and middle pressure No. 1 diaphragm housing ring (7), it is characterized in that, described high pressure inner casing (1), high pressure blade ring (5) and middle pressure No. 1 diaphragm housing ring (7) are integrated part, and the blade of high-pressure section is directly installed on high pressure inner casing (1).
2. a kind of novel overall high pressure inner casing being applied to supercritical pressure turbine according to claim 1, it is characterized in that, high-pressure admission mouth, in compress into steam ports, No. 0 high-pressure heater extraction opening (2), No. 1 high-pressure heater extraction opening (3), high pressure steam admission side equalizing orifice and septalium are integrated part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889330.5A CN105370329A (en) | 2015-12-04 | 2015-12-04 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510889330.5A CN105370329A (en) | 2015-12-04 | 2015-12-04 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105370329A true CN105370329A (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510889330.5A Pending CN105370329A (en) | 2015-12-04 | 2015-12-04 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370329A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294249A (en) * | 1998-06-04 | 2001-05-09 | 三菱重工业株式会社 | Leakage reducing structure of steam turbine |
| CN101493016A (en) * | 2008-12-10 | 2009-07-29 | 上海电气电站设备有限公司 | Single-cylinder, reaction and impulse turbine |
| CN102562187A (en) * | 2011-12-21 | 2012-07-11 | 上海发电设备成套设计研究院 | High-and-medium-pressure integrated cylinder for air cooling type high-parameter steam turbine |
| CN202866911U (en) * | 2012-10-22 | 2013-04-10 | 上海电气电站设备有限公司 | Turbine high-pressure cylinder structure |
| CN203685318U (en) * | 2014-03-03 | 2014-07-02 | 哈尔滨汽轮机厂有限责任公司 | Integral type high-pressure inner cylinder for 350MW turbine |
| CN204783137U (en) * | 2015-05-27 | 2015-11-18 | 上海电气电站设备有限公司 | High middling pressure integral type inner casing structure of steam turbine |
| CN205135733U (en) * | 2015-12-04 | 2016-04-06 | 哈尔滨汽轮机厂有限责任公司 | Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine |
-
2015
- 2015-12-04 CN CN201510889330.5A patent/CN105370329A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294249A (en) * | 1998-06-04 | 2001-05-09 | 三菱重工业株式会社 | Leakage reducing structure of steam turbine |
| CN101493016A (en) * | 2008-12-10 | 2009-07-29 | 上海电气电站设备有限公司 | Single-cylinder, reaction and impulse turbine |
| CN102562187A (en) * | 2011-12-21 | 2012-07-11 | 上海发电设备成套设计研究院 | High-and-medium-pressure integrated cylinder for air cooling type high-parameter steam turbine |
| CN202866911U (en) * | 2012-10-22 | 2013-04-10 | 上海电气电站设备有限公司 | Turbine high-pressure cylinder structure |
| CN203685318U (en) * | 2014-03-03 | 2014-07-02 | 哈尔滨汽轮机厂有限责任公司 | Integral type high-pressure inner cylinder for 350MW turbine |
| CN204783137U (en) * | 2015-05-27 | 2015-11-18 | 上海电气电站设备有限公司 | High middling pressure integral type inner casing structure of steam turbine |
| CN205135733U (en) * | 2015-12-04 | 2016-04-06 | 哈尔滨汽轮机厂有限责任公司 | Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160302 |