CN203742678U - Last-stage dehumidification stator blade of high-power turbine - Google Patents
Last-stage dehumidification stator blade of high-power turbine Download PDFInfo
- Publication number
- CN203742678U CN203742678U CN201420195281.6U CN201420195281U CN203742678U CN 203742678 U CN203742678 U CN 203742678U CN 201420195281 U CN201420195281 U CN 201420195281U CN 203742678 U CN203742678 U CN 203742678U
- Authority
- CN
- China
- Prior art keywords
- wet sump
- cavity
- blade
- dehumidification
- blade body
- 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.)
- Expired - Lifetime
Links
- 238000007791 dehumidification Methods 0.000 title abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Abstract
The utility model discloses a last-stage dehumidification stator blade of a high-power turbine and relates to a stator blade. The last-stage dehumidification stator blade of the high-power turbine solves the problem of low dehumidification efficiency of an existing dehumidification structure due to the water film cross-flow phenomenon between a suction surface dehumidification groove and a pressure surface dehumidification groove. The last-stage dehumidification stator blade of the high-power turbine further comprises a rib plate, the rib plate is mounted in a blade cavity along the axial direction of a blade body and divides the blade cavity into a first cavity and a second cavity, a plurality of pressure surface dehumidification grooves are arranged in two rows in parallel along the lengthwise direction of the blade body, a plurality of suction surface dehumidification grooves are arranged in two rows in parallel along the lengthwise direction of the blade body, the pressure surface dehumidification grooves are communicated with the first cavity, and the suction surface dehumidification grooves are communicated with the second cavity. The last-stage dehumidification stator blade is used for the high-power turbine.
Description
Technical field
The utility model relates to a kind of stator blade, is specifically related to a kind of large steam turbine final stage dehumidifying stationary blade sheet.
Background technique
At present, the principle of conventional stator blade dehumidification structure, for to open an eliminating wet sump on stator blade surface, communicates with low pressure area, utilizes the pressure reduction suction stator blade surperficial moisture film except wet sump place inside and outside except wet sump, thereby reaches the object of dehumidifying.Consider effect on moisture extraction and pneumatic efficiency, suction surface equates for optimal case except the pressure at wet sump place except wet sump and pressure side, but, be subject to the restriction of the aspect such as blade profile, structure of stator blade, be difficult to accomplish this point, so suction surface removes wet sump and pressure side exists pressure reduction except between wet sump, moisture film crossfire, thus cause dehumidification rate low.
Model utility content
The utility model is that the suction surface of the existing dehumidification structure of solution removes wet sump and pressure side exists moisture film crossfire phenomenon except between wet sump, thereby causes the problem that dehumidification rate is low, and then proposes a kind of large steam turbine final stage dehumidifying stationary blade sheet.
The utility model is to address the above problem the technological scheme of taking to be: a kind of large steam turbine final stage dehumidifying stationary blade sheet described in the utility model, it comprises blade body, multiple pressure sides remove wet sump and multiple suction surface removes wet sump, in blade body, be provided with blade cavity, be provided with multiple pressure sides except wet sump along blade body inner arc radially, multiple pressure sides are except the setting of wet sump interval, be provided with multiple suction surfaces except wet sump along blade body outer arc radially, multiple suction surfaces are except the setting of wet sump interval, described a kind of large steam turbine final stage dehumidifying stationary blade sheet also comprises gusset, gusset is axially disposed within blade cavity along blade body, blade cavity is divided into the first cavity and the second cavity by gusset, multiple pressure sides remove wet sump and are radially arranged to two parallel rows along blade body, multiple suction surfaces remove wet sump and are radially arranged to two parallel rows along blade body, multiple pressure sides remove wet sump and are all communicated with the first cavity, multiple suction surfaces remove wet sump and are all communicated with the second cavity.
The beneficial effects of the utility model are: the utility model adopts, in blade cavity, gusset is set, blade cavity is divided into the first cavity and second cavity two-part, making the first cavity and pressure side remove wet sump is communicated with, the second cavity removes wet sump with suction surface and is communicated with, thereby avoid the generation of the crossfire phenomenon causing except the pressure difference between wet sump except wet sump and suction surface due to pressure side, and increase gusset, improved the bulk strength of blade.Meanwhile, pressure side is all arranged to two row's parallel structures except wet sump and suction surface except wet sump, makes dehumidification rate improve 30%.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present utility model, and Fig. 2 is the A-A place sectional view of Fig. 1.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 and Fig. 2, a kind of large steam turbine final stage dehumidifying stationary blade sheet described in present embodiment, it comprises blade body 1, multiple pressure sides remove wet sump 3 and multiple suction surface removes wet sump 4, in blade body 1, be provided with blade cavity 2, be provided with multiple pressure sides except wet sump 3 along blade body 1 inner arc radially, multiple pressure sides are except wet sump 3 intervals settings, be provided with multiple suction surfaces except wet sump 4 along blade body 1 outer arc radially, multiple suction surfaces are except wet sump 4 intervals settings, described a kind of large steam turbine final stage dehumidifying stationary blade sheet also comprises gusset 5, gusset 5 is axially disposed within blade cavity 2 along blade body 1, blade cavity 2 is divided into the first cavity 2-1 and the second cavity 2-2 by gusset 5, multiple pressure sides remove wet sump 3 and are radially arranged to two parallel rows along blade body 1, multiple suction surfaces remove wet sump 4 and are radially arranged to two parallel rows along blade body 1, multiple pressure sides remove wet sump 3 and are all communicated with the first cavity 2-1, multiple suction surfaces remove wet sump 4 and are all communicated with the second cavity 2-2.
So arrange, avoided the generation of the crossfire phenomenon causing except the pressure reduction between wet sump 4 except wet sump 3 and suction surface due to pressure side, make pressure side remove wet sump 3 and suction surface and can play exsiccation except wet sump 4.And multiple pressure sides, except wet sump 3 and multiple suction surface are except wet sump 4 is the staggered intermittent configuration of two rows, have improved dehumidification rate.
Embodiment two: in conjunction with Fig. 1 and Fig. 2, present embodiment is described, described in present embodiment pressure side except the axial width of wet sump 3 be 1.5mm～3.0mm, suction surface except the axial width of wet sump 4 be 1.5mm～3.0mm.So arranging, is to have considered effect on moisture extraction and blade strength, is optimum structural design.Other compositions are identical with embodiment one with annexation.
Working principle
The utility model is established the parallel pressure side of two rows except wet sump 3 at blade body 1 inner arc, blade body 1 outer arc is established the parallel suction surface of two rows except wet sump 4, blade cavity 2 is divided into the first cavity 2-1 and the second cavity 2-2 by gusset 5, the first cavity 2-1 removes wet sump 3 with pressure side and is communicated with, the second cavity 2-2 removes wet sump 4 with suction surface and is communicated with, avoid the generation of the crossfire phenomenon causing except the pressure reduction between wet sump 3 except wet sump 4 and pressure side due to suction surface, pressure side is communicated with low pressure area after level respectively except wet sump 4 except wet sump 3 and suction surface, utilizing pressure side to remove the inside and outside pressure reduction of wet sump 3 and suction surface dehumidifies except wet sump 4 inside and outside pressure reduction.
Claims (2)
1. a large steam turbine final stage dehumidifying stationary blade sheet, it comprises blade body (1), multiple pressure sides remove wet sump (3) and multiple suction surface removes wet sump (4), in blade body (1), be provided with blade cavity (2), be provided with multiple pressure sides except wet sump (3) along blade body (1) inner arc radially, multiple pressure sides are except the setting of wet sump (3) interval, be provided with multiple suction surfaces except wet sump (4) along blade body (1) outer arc radially, multiple suction surfaces are except the setting of wet sump (4) interval, it is characterized in that: described a kind of large steam turbine final stage dehumidifying stationary blade sheet also comprises gusset (5), gusset (5) is axially disposed within blade cavity (2) along blade body (1), blade cavity (2) is divided into the first cavity (2-1) and the second cavity (2-2) by gusset (5), multiple pressure sides remove wet sump (3) and are radially arranged to two parallel rows along blade body (1), multiple suction surfaces remove wet sump (4) and are radially arranged to two parallel rows along blade body (1), multiple pressure sides remove wet sump (3) and are all communicated with the first cavity (2-1), multiple suction surfaces remove wet sump (4) and are all communicated with the second cavity (2-2).
2. a kind of large steam turbine final stage dehumidifying stationary blade sheet according to claim 1, is characterized in that: the axial width that pressure side removes wet sump (3) is 1.5mm～3.0mm, and the axial width that suction surface removes wet sump (4) is 1.5mm～3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195281.6U CN203742678U (en) | 2014-04-21 | 2014-04-21 | Last-stage dehumidification stator blade of high-power turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195281.6U CN203742678U (en) | 2014-04-21 | 2014-04-21 | Last-stage dehumidification stator blade of high-power turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742678U true CN203742678U (en) | 2014-07-30 |
Family
ID=51342493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195281.6U Expired - Lifetime CN203742678U (en) | 2014-04-21 | 2014-04-21 | Last-stage dehumidification stator blade of high-power turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953397B (en) * | 2014-04-21 | 2015-11-18 | 哈尔滨汽轮机厂有限责任公司 | A kind of large steam turbine final stage dehumidifying stationary blade sheet |
| CN114704333A (en) * | 2022-04-02 | 2022-07-05 | 中国人民解放军海军工程大学 | Dehumidifying stator blade of wet steam turbine |
-
2014
- 2014-04-21 CN CN201420195281.6U patent/CN203742678U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953397B (en) * | 2014-04-21 | 2015-11-18 | 哈尔滨汽轮机厂有限责任公司 | A kind of large steam turbine final stage dehumidifying stationary blade sheet |
| CN114704333A (en) * | 2022-04-02 | 2022-07-05 | 中国人民解放军海军工程大学 | Dehumidifying stator blade of wet steam turbine |
| CN114704333B (en) * | 2022-04-02 | 2023-11-14 | 中国人民解放军海军工程大学 | Dehumidifying stationary blade of wet turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |