CN209083340U - The arc of impulse turbine divides whole stator blade - Google Patents
The arc of impulse turbine divides whole stator blade Download PDFInfo
- Publication number
- CN209083340U CN209083340U CN201821699501.3U CN201821699501U CN209083340U CN 209083340 U CN209083340 U CN 209083340U CN 201821699501 U CN201821699501 U CN 201821699501U CN 209083340 U CN209083340 U CN 209083340U
- Authority
- CN
- China
- Prior art keywords
- divisional plane
- stator blade
- interior
- intrados
- arc
- 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.)
- Active
Links
Abstract
A kind of arc of impulse turbine of the utility model design divides whole stator blade, including stator blade main body, the stator blade main body includes blade root, the intrados of molded line part and extrados, shroud, interior divisional plane and outer divisional plane, the intrados is overlapped with interior divisional plane, and the intrados end is extended with extended line, in the entirety that connects into of divisional plane and extended line it is C-shaped.The characteristics of this structure is: the interior divisional plane includes extended line using molding disc type milling cutter, is formed along the high direction feed milling of leaf.The extrados is formed using ordinary disc-type milling cutter along back arc lines feed milling.The outer divisional plane, angle is equal between interior divisional plane underlay tooling block, tooling block tilt angle and the single inside and outside divisional plane of leaf, using ordinary disc-type milling cutter, forms along outer divisional plane feed milling.
Description
Technical field
The utility model relates to turbine blade fields, and in particular to a kind of arc segmentation of impulse turbine is whole quiet
Leaf.
Background technique
As shown in Figure 1, being the flow passage component sectional side elevation of steam turbine, if being along the circumferential direction equipped in the annular groove of support ring body
Dry stator blade, is along the circumferential direction equipped with several movable vanes in the annular groove of shaft.Support ring body and stator blade are stationary, shaft with
Movable vane along the circumferential direction rotates.As shown in Fig. 2, be the diamond shape stator blade of reaction turbine and the cross-sectional view of Blade Profile part,
Stator blade is the blade root of diamond shape segmentation, blade profile, the three-in-one whole stator blade of shroud, single diamond shape stator blade three-dimensional figure of reaction turbine
As shown in figure 3, dicing α is greater than 60 °.As shown in figure 4, being the diamond shape stator blade of impulse turbine and cuing open for Blade Profile part
The stator blade molded line of view, impulse is longer than reactionary style, and inclination angle is small, and single diamond shape stator blade three-dimensional figure of impulse turbine is such as
Shown in Fig. 5, in order not to switch to trailing edge and back arc, for dicing β less than 45 °, this will cause two problems: when 1, assembling stator blade, by
In wedge effect, the stator blade loaded can be irregular, as shown in fig. 6, influencing the dynamic and static gaps D between stator blade and movable vane, occurs
Sound wiping is touched；It misplaces at adjacent stator blade docking, as shown in fig. 7, the step that the dislocation of steam passage upper and lower surface generates can be upset
The flowing of water vapour, caused by secondary flow loss account for 90% or more of stator blade flow losses.
Utility model content
The purpose of this utility model is to provide a kind of segmentation of the arc of impulse turbine that Secondary Flow loss rate is low is whole
Stator blade.
To achieve the goals above, a kind of arc of impulse turbine of the utility model design divides whole stator blade,
Including stator blade main body, the stator blade main body includes blade root, the intrados of molded line part and extrados, shroud, interior divisional plane and outer
Divisional plane, the intrados are overlapped with interior divisional plane, and the intrados end is extended with extended line, divisional plane and extension in institute
The entirety that line connects into is C-shaped.The characteristics of this structure is: the interior divisional plane includes extended line using molding disc type milling
Knife is formed along the high direction feed milling of leaf.The extrados is formed using ordinary disc-type milling cutter along back arc lines feed milling.
The outer divisional plane, the angle phase between interior divisional plane underlay tooling block, tooling block tilt angle and the single inside and outside divisional plane of leaf
Deng being formed along outer divisional plane feed milling using ordinary disc-type milling cutter.
Further embodiment is that the outer divisional plane is identical as interior divisional plane shape, and in the end of extrados is connected to
The junction of cambered surface and extended line.
Further scheme is, the angle between the interior divisional plane and outer divisional plane is equal to 360 °/whole circle stator blade
Number.
The utility model has the beneficial effects that: the wedge effect that the inner arc extended line contact surface generates, with intrados
The wedge effect that contact surface generates is cancelled out each other, and the stator blade lagging edge loaded is concordant, ensure that the sound between stator blade and movable vane
Gap is uniform；Interior divisional plane is overlapped with molded line intrados, and the upper and lower surface of steam passage is made of a stator blade, and runner is smooth, by vapour
Secondary flow loss caused by road wall surface accounts for the 30 ~ 40% of stator blade flow losses.
Detailed description of the invention
Fig. 1 is the flow passage component sectional side elevation of steam turbine.
Fig. 2 is the diamond shape stator blade and Blade Profile partial sectional view of reaction turbine.
Fig. 3 is single diamond shape stator blade schematic diagram of reaction turbine.
Fig. 4 is the diamond shape stator blade and Blade Profile partial sectional view of impulse turbine.
Fig. 5 is single diamond shape stator blade schematic diagram of impulse turbine.
Fig. 6 is the diamond shape stator blade and Blade Profile partial sectional view of the impulse turbine after assembly.
Fig. 7 is the diamond shape entirety stator blade schematic diagram of the impulse turbine after assembly.
Fig. 8 is single arc stator blade schematic diagram of impulse turbine.
Fig. 9 is the arc entirety stator blade schematic diagram of the impulse turbine after assembly.
Figure 10 is the arc stator blade and Blade Profile partial sectional view of the impulse turbine after assembly.
Specific embodiment
The utility model is further detailed with reference to embodiments:
Embodiment 1:
As shown in Fig. 1 to 10, a kind of arc of impulse turbine of the utility model divides whole stator blade, including stator blade
Main body, it is characterized in that the stator blade main body includes blade root 1, the intrados 2 of molded line part and extrados 3, shroud 4, interior divisional plane 5
With outer divisional plane 6, the intrados 2 is overlapped with interior divisional plane 5, and 2 end of the intrados is extended with extended line 7, divides in institute
The entirety that face 5 and extended line 7 connect into is C-shaped.The outer divisional plane 6 is identical as interior 5 shape of divisional plane, and extrados 3
End is connected to the junction of intrados 2 Yu extended line 7.Angle between the interior divisional plane 5 and outer divisional plane 6 is equal to
360 °/whole circle stator blade number.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail.It should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model.Within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of arc of impulse turbine divides whole stator blade, including stator blade main body, it is characterized in that the stator blade main body packet
Include blade root (1), the intrados (2) of molded line part and extrados (3), shroud (4), interior divisional plane (5) and outer divisional plane (6), institute
It states intrados (2) to be overlapped with interior divisional plane (5), and the intrados (2) end is extended with extended line (7), the interior divisional plane
(5) and the entirety that connects into of extended line (7) is C-shaped.
2. a kind of arc of impulse turbine according to claim 1 divides whole stator blade, it is characterized in that described outer point
Face (6) is identical as interior divisional plane (5) shape, and the end of extrados (3) is connected to the company of intrados (2) Yu extended line (7)
Meet place.
3. a kind of arc of impulse turbine according to claim 1 divides whole stator blade, it is characterized in that described is interior
Angle between divisional plane (5) and outer divisional plane (6) is equal to 360 °/whole circle stator blade number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821699501.3U CN209083340U (en) | 2018-10-19 | 2018-10-19 | The arc of impulse turbine divides whole stator blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821699501.3U CN209083340U (en) | 2018-10-19 | 2018-10-19 | The arc of impulse turbine divides whole stator blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209083340U true CN209083340U (en) | 2019-07-09 |
Family
ID=67119863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821699501.3U Active CN209083340U (en) | 2018-10-19 | 2018-10-19 | The arc of impulse turbine divides whole stator blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209083340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356669A (en) * | 2018-10-19 | 2019-02-19 | 杭州中能汽轮动力有限公司 | The arc of impulse turbine divides whole stator blade |
-
2018
- 2018-10-19 CN CN201821699501.3U patent/CN209083340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356669A (en) * | 2018-10-19 | 2019-02-19 | 杭州中能汽轮动力有限公司 | The arc of impulse turbine divides whole stator blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0997612B1 (en) | A circumferential row of aerofoil members of a turbomachine | |
| US2920864A (en) | Secondary flow reducer | |
| JP5777531B2 (en) | Airfoil blades for axial turbomachinery | |
| CA1283365C (en) | Multiple lug blade to disk attachment | |
| CN209083340U (en) | The arc of impulse turbine divides whole stator blade | |
| CN105756996A (en) | Axial flow fan with blade suction surfaces having vortex breaking structures and with grooves formed in blade tops | |
| CN107061329A (en) | A kind of axial flow blower | |
| JP2011094616A (en) | Turbine airfoil-sidewall integration | |
| GB1314853A (en) | Stator blading for turbomachinery | |
| CN110439724B (en) | Mixed-flow runner for hydraulic machinery | |
| US8777564B2 (en) | Hybrid flow blade design | |
| CN109707461B (en) | High-rotation-speed high-load final-stage movable blade for industrial steam turbine | |
| KR20150044754A (en) | Blade bucket structure savonius turbine | |
| CN109356669A (en) | The arc of impulse turbine divides whole stator blade | |
| CN105822589A (en) | Centrifugal pump impeller with high working efficiency | |
| CN106949087B (en) | Shaft seal type nuclear main pump impeller structure with back vanes | |
| CN110725808B (en) | Centrifugal impeller blade, configuration method and centrifugal compressor | |
| CN107605540B (en) | Double-split-flow turbine steam inlet flow guide structure | |
| CN204878074U (en) | Stator blade of back stator sweepforward of axial compressor pump station | |
| CN106368741A (en) | Blade with small wing rib blade tip and turbine utilizing blade | |
| CN105626159A (en) | Variable geometry turbine with wavy concaved structures on front edges of movable blades | |
| CN205744585U (en) | The centrifugal pump impeller that a kind of work efficiency is high | |
| JPH0692723B2 (en) | Axial flow fluid machine | |
| CN206738198U (en) | A kind of axial flow blower | |
| CN210599116U (en) | Steam turbine blade of repairing one's body and moving blade group that constitutes thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |