CN110030039A - A kind of steam turbine dehumidifying grade hollow shelf - Google Patents
A kind of steam turbine dehumidifying grade hollow shelf Download PDFInfo
- Publication number
- CN110030039A CN110030039A CN201910411701.7A CN201910411701A CN110030039A CN 110030039 A CN110030039 A CN 110030039A CN 201910411701 A CN201910411701 A CN 201910411701A CN 110030039 A CN110030039 A CN 110030039A
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- CN
- China
- Prior art keywords
- blade
- dehumidifying
- outer ring
- steam turbine
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005192 partition Methods 0.000 claims abstract description 14
- 208000002925 dental caries Diseases 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005242 forging Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
- F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A kind of steam turbine dehumidifying grade hollow shelf, belongs to steam turbine dehumidifying field, and in particular to steam turbine dehumidifying partition.Purpose is to solve the problems, such as that traditional steam turbine dehumidifying partition effect on moisture extraction is poor.A kind of steam turbine of the present invention uses dehumidifying grade hollow shelf ecto-entad successively are as follows: outer ring, blade and inner ring；Inside the outer ring, be cavity inside blade interior and inner ring, and three cavitys are connected；The outer ring bottom is provided with weep hole, and the weep hole is connected with outer ring internal cavities；Hollow blade outer surface is provided with except wet sump, described except wet sump is connected with blade interior cavity.A kind of steam turbine of the present invention is wet high-efficient with dehumidifying grade hollow shelf, and the processing is simple.
Description
Technical field
The invention belongs to steam turbine dehumidifying fields, and in particular to steam turbine dehumidifying partition.
Background technique
Traditional steam turbine dehumidifying partition is mostly stator blade surface notching construction, and such structure is close in stator blade surface pressing face
The position of lagging edge opens up the radial groove of one group of certain length, captured when moisture film flows through this except wet sump, and in the work of pressure difference
Hollowed out annular is flow to by groove with lower, and hydrophobic position after grade is flowed to by suction hole.
Every blade of such structure only opens up one group except wet sump, and the ability for capturing water droplet is poor.And dehumidifying is only opened up
Slot does not have internal suction channel, except the steam in wet sump be difficult to be formed in the case where the steam that blade surface flows is blown it is stable, close
The flow field of conjunction, the water droplet of capture are difficult to smooth flow to the position of suction hole under the flow field of disorder and the flow resistance of itself,
It is easy to be again introduced into main steam flow, movable vane is caused to damage.
Summary of the invention
The purpose of the present invention is to solve the problems of traditional steam turbine dehumidifying partition effect on moisture extraction difference, provide a kind of vapour
Turbine dehumidifying grade hollow shelf.
A kind of steam turbine of the present invention with dehumidifying grade hollow shelf include: ecto-entad successively set gradually it is outer
Ring, blade and inner ring；
Inside the outer ring, be cavity inside blade interior and inner ring, and three cavitys are connected；
The outer ring bottom is provided with weep hole, and the weep hole is connected with outer ring internal cavities；
Blade outer surface is provided with except wet sump, described except wet sump is connected with blade interior cavity.
Further, inner arc side dehumidifying slot position in close to the position for going out gas side, dehumidify by back arc side on the blade outer surface
Slot position is in position identical with inner arc pressure.
Further, the blade includes blade body and closure plate two parts, is formed between the blade body and closure plate
The cavity of hollow blade.
Further, the outer ring includes outer ring main body and closure plate two parts, is formed between the outer ring main body and closure plate
The cavity of outer ring.
Further, the inner ring includes inner ring main body and closure plate two parts, is formed between the inner ring main body and closure plate
The cavity of inner ring.
Steam turbine dehumidifying partition inner and outer rings are designed as hollow structure by the present invention, while diaphragm nozzle is hollow, in blade pressure
Close to the position of lagging edge and suction surface, close to the position of leading edge, setting removes wet sump in power face, removes wet sump and blade internal cavity phase
Even.Moisture film is dehumidified slot capture when flowing through except wet sump, and by entering blade inner cavity except wet sump, the capture of partition top half
Drop flows to inner ring by blade inner cavity, and flows to outer ring by the blade inner cavity that inner ring flows to partition lower half, is collected to
The weep hole of outer ring bottom；The drop of partition lower half portion capture flows to outer ring by blade inner cavity, is collected to outer ring bottom
Weep hole is guided by steam trap connection.
Since blade inner cavity after the weep hole and partition on outer ring inner cavity and outer ring by being connected, due to existing before and after partition
Pressure difference, such structure make between blade inner cavity (can be considered after being equal to partition) and stator blade runner that there are pressure differences, in the work of pressure difference
It water droplet is drawn into blade inner cavity and is guided with lower.The entire vapor (steam) velocity for removing wet sump carries water droplet ability more along leaf Gao Zenggao
By force；The water droplet not being pumped can be pooled to partition inner ring cavity by blade lower half cavity, greatly improve under the effect of gravity
Dehumidification efficiency can be good at that movable vane piece is protected to influence from the water erosion of coarse water.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of steam turbine dehumidifying grade hollow shelf top half of the present invention, wherein 1
It is blade for outer ring, 2,3 be inner ring, and 21 is are blade closure plate except wet sump, 23, and 24 be blade body；
Fig. 2 is outer ring structure schematic diagram, wherein 11 be outer ring main body, 12 be closure plate, and 13 be weep hole, and 14 be fabrication hole；
Fig. 3 is inner ring structural schematic diagram, wherein 31 be inner ring main body, 32 be closure plate；
Fig. 4 is blade construction schematic diagram；
Fig. 5 is the sectional view of blade, wherein 22 indicate blade interior cavity, 25 indicate inner arc side, and 26 indicate back arc side；
Fig. 6 is the overall structure diagram of hollow shelf；
Fig. 7 is the dehumidification principle schematic diagram of hollow shelf, wherein 4 indicate moisture film, 5 indicate steam stream, and 6 indicate secondary water
Drop, 7 indicate movable vane, and 8 indicate water erosion position.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1 to Fig. 7.A kind of steam turbine described in present embodiment
It include: outer ring 1, blade 2 and the inner ring 3 that ecto-entad is set gradually with dehumidifying grade hollow shelf；
Inside the outer ring, be cavity inside blade interior and inner ring, and three cavitys are connected；
The outer ring bottom is provided with weep hole 13, as shown in fig. 6, the weep hole is connected with outer ring internal cavities；
Blade outer surface is provided with except wet sump 21, described except wet sump is connected with blade interior cavity 22.
On the blade outer surface inner arc side dehumidifying slot position in close to go out gas side position, back arc side dehumidifying slot position in it is interior
Position similar in arc voltage power.
The blade includes blade body 24 and 23 two parts of closure plate, and hollow leaf is formed between the blade body and closure plate
The cavity of piece.
The outer ring includes outer ring main body 11 and 12 two parts of closure plate, and outer ring is formed between the outer ring main body and closure plate
Cavity.
The inner ring includes inner ring main body 31 and 32 two parts of closure plate, and inner ring is formed between the inner ring main body and closure plate
Cavity.
In present embodiment, blade is hollow form, as shown in figure 5, using die forging structure.Blade be divided into blade body with
Closure plate two parts as shown in figure 4, blade body part carries out forging molding by the way that mold is fixed, while forging hollow, top
It is hollow more hollow than root big.Blade surface arrangement removes wet sump, and arc side is carried on the back except wet sump is as close as possible in steam output side position in inner arc side
Except wet sump setting with inner arc pressure mutually nearby, as shown in Figure 5.The closure plate of inner ring and outer ring also uses die forging structure, is meeting
Steel plate punched molding can also be used in the case where intensity.By blade body and closure plate machining after, carry out welding equipment assembling, finally plus
Back arc and weld seam in work polishing carry on the back arc drain tank with electric pulse after Seiko or in laser machining out.Inner ring, outer ring and blade are direct
Welding.To dredge institute's ponding part in blade, outer ring is designed to hollow structure, and since outer ring width is larger, can set outer ring
It is calculated as the form of outer ring main body and steel plate (closure plate) welding, as shown in Figure 2.Inner ring is also designed to hollow structure, but its width compared with
It is small, it may be designed as the form of inner ring main body and steel plate welding or the form of steel plate and steel plate welding, as shown in Figure 3.
Claims (5)
1. a kind of steam turbine dehumidifying grade hollow shelf, which is characterized in that the partition include: ecto-entad set gradually it is outer
Ring, blade and inner ring；
Inside the outer ring, be cavity inside blade interior and inner ring, and three cavitys are connected；
The outer ring bottom is provided with weep hole, and the weep hole is connected with outer ring internal cavities；
Blade outer surface is provided with except wet sump, described except wet sump is connected with blade interior cavity.
2. a kind of steam turbine according to claim 1 dehumidifying grade hollow shelf, which is characterized in that the blade outer surface
Upper inner arc side dehumidifying slot position is in close to the position for going out gas side, and dehumidifying slot position in back arc side is in position identical with inner arc pressure.
3. a kind of steam turbine according to claim 1 or 2 dehumidifying grade hollow shelf, which is characterized in that the blade packet
Blade body and closure plate two parts are included, forms the cavity of hollow blade between the blade body and closure plate.
4. a kind of steam turbine according to claim 1 or 2 dehumidifying grade hollow shelf, which is characterized in that the outer ring packet
Outer ring main body and closure plate two parts are included, forms the cavity of outer ring between the outer ring main body and closure plate.
5. a kind of steam turbine according to claim 1 or 2 dehumidifying grade hollow shelf, which is characterized in that the inner ring packet
Inner ring main body and closure plate two parts are included, forms the cavity of inner ring between the inner ring main body and closure plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910411701.7A CN110030039A (en) | 2019-05-16 | 2019-05-16 | A kind of steam turbine dehumidifying grade hollow shelf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910411701.7A CN110030039A (en) | 2019-05-16 | 2019-05-16 | A kind of steam turbine dehumidifying grade hollow shelf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110030039A true CN110030039A (en) | 2019-07-19 |
Family
ID=67242577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910411701.7A Withdrawn CN110030039A (en) | 2019-05-16 | 2019-05-16 | A kind of steam turbine dehumidifying grade hollow shelf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983562A (en) * | 2021-02-22 | 2021-06-18 | 西安热工研究院有限公司 | Structural arrangement and working method of low-pressure hollow guide vane dehumidification groove of steam turbine |
| CN114087041A (en) * | 2021-10-30 | 2022-02-25 | 中国长江动力集团有限公司 | Steam turbine dehumidification stage partition plate |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU996735A2 (en) * | 1981-06-29 | 1983-02-15 | Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина | Wet steam turbine guiding apparatus |
| RU2067666C1 (en) * | 1993-07-09 | 1996-10-10 | Акционерное общество открытого типа "Ленинградский Металлический завод" | High-speed moisture separator for steam lines of steam turbines |
| CN1135014A (en) * | 1995-02-13 | 1996-11-06 | Abb研究有限公司 | Guide blade for steam turbines |
| CN1294246A (en) * | 1999-10-28 | 2001-05-09 | 三菱重工业株式会社 | Fixed blades of steam turbine |
| CN101089370A (en) * | 2006-06-14 | 2007-12-19 | 通用电气公司 | System design and cooling method for lp steam turbines using last stage hybrid bucket |
| CN103953396A (en) * | 2012-12-13 | 2014-07-30 | 诺沃皮尼奥内股份有限公司 | Hollow blade for turbomachine, turbomachine, and related manufacture methods |
| CN103953397A (en) * | 2014-04-21 | 2014-07-30 | 哈尔滨汽轮机厂有限责任公司 | Last-stage dehumidifying stator blade of high-power turbine |
| RU2614316C1 (en) * | 2016-02-24 | 2017-03-24 | Публичное акционерное общество "Силовые машины - ЗТЛ, ЛМЗ, Электросила, Энергомашэкспорт" (ПАО "Силовые машины") | Last stage of steam turbine |
| CN106661951A (en) * | 2014-06-27 | 2017-05-10 | 三菱日立电力系统株式会社 | Stator vane unit and steam turbine |
| CN209761502U (en) * | 2019-05-16 | 2019-12-10 | 哈尔滨汽轮机厂有限责任公司 | Hollow partition plate of dehumidification grade for steam turbine |
-
2019
- 2019-05-16 CN CN201910411701.7A patent/CN110030039A/en not_active Withdrawn
Patent Citations (10)
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|---|---|---|---|---|
| SU996735A2 (en) * | 1981-06-29 | 1983-02-15 | Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина | Wet steam turbine guiding apparatus |
| RU2067666C1 (en) * | 1993-07-09 | 1996-10-10 | Акционерное общество открытого типа "Ленинградский Металлический завод" | High-speed moisture separator for steam lines of steam turbines |
| CN1135014A (en) * | 1995-02-13 | 1996-11-06 | Abb研究有限公司 | Guide blade for steam turbines |
| CN1294246A (en) * | 1999-10-28 | 2001-05-09 | 三菱重工业株式会社 | Fixed blades of steam turbine |
| CN101089370A (en) * | 2006-06-14 | 2007-12-19 | 通用电气公司 | System design and cooling method for lp steam turbines using last stage hybrid bucket |
| CN103953396A (en) * | 2012-12-13 | 2014-07-30 | 诺沃皮尼奥内股份有限公司 | Hollow blade for turbomachine, turbomachine, and related manufacture methods |
| CN103953397A (en) * | 2014-04-21 | 2014-07-30 | 哈尔滨汽轮机厂有限责任公司 | Last-stage dehumidifying stator blade of high-power turbine |
| CN106661951A (en) * | 2014-06-27 | 2017-05-10 | 三菱日立电力系统株式会社 | Stator vane unit and steam turbine |
| RU2614316C1 (en) * | 2016-02-24 | 2017-03-24 | Публичное акционерное общество "Силовые машины - ЗТЛ, ЛМЗ, Электросила, Энергомашэкспорт" (ПАО "Силовые машины") | Last stage of steam turbine |
| CN209761502U (en) * | 2019-05-16 | 2019-12-10 | 哈尔滨汽轮机厂有限责任公司 | Hollow partition plate of dehumidification grade for steam turbine |
Non-Patent Citations (1)
| Title |
|---|
| 程序;: "AP1000汽轮机主要设备结构浅析", 中国高新技术企业, no. 14, pages 60 - 62 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983562A (en) * | 2021-02-22 | 2021-06-18 | 西安热工研究院有限公司 | Structural arrangement and working method of low-pressure hollow guide vane dehumidification groove of steam turbine |
| CN114087041A (en) * | 2021-10-30 | 2022-02-25 | 中国长江动力集团有限公司 | Steam turbine dehumidification stage partition plate |
| CN114087041B (en) * | 2021-10-30 | 2024-05-28 | 中国长江动力集团有限公司 | Dehumidifying separator for steam turbine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190719 |