CN2916139Y - Dedicated twinborn governing-stage blade for steam turbine set of 50MW, 100MW, and 200MW - Google Patents
Dedicated twinborn governing-stage blade for steam turbine set of 50MW, 100MW, and 200MW Download PDFInfo
- Publication number
- CN2916139Y CN2916139Y CN 200620021226 CN200620021226U CN2916139Y CN 2916139 Y CN2916139 Y CN 2916139Y CN 200620021226 CN200620021226 CN 200620021226 CN 200620021226 U CN200620021226 U CN 200620021226U CN 2916139 Y CN2916139 Y CN 2916139Y
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- blade
- steam turbine
- working part
- shroud
- blade working
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Abstract
The utility model relates to an adjusting twinborn blade specialized for steam turbine unit of 50MW, 100MW and 200MW, which is designed to solve the defects of large stress beared, bad anti-jamming ability of vibration frequency and poor safety and reliability for the adjusting blade of the current steam turbine unit of 50MW and 100MW. Height H of working blade (1) with line of uniform cross section is 20 to 80mm and its axis width B is 40 to 80mm; a blade root (2) is a rectangular parallelepiped with bipatch and integrated with two working blades (1) ; a shroud ring (3) of slab structure is riveted with a rivet head(1-1) on the upper end of the working blade (1) and form a blade unit structure with a set of working blade (1). The utility model is characterized in easy manufacture, convenient assembly and disassembly and safe and reliable operation, which can bear large stress under high temperature, avoid various vibration frequency interferences and meet the demands for the steam turbine unit of 50MW, 100MW and 200MW.
Description
Technical field
The utility model relates to a kind of turbine blade.
Background technique
In Turbine Flow Path, regulating stage blade will be subjected to bigger impact, because pressure reduction is big after the level prime of blade, enthalpy drop is big, the impact force that axially reaches tangential effect of formation is bigger.Therefore, require blade to have the little and high frequency of molded lines loss coefficient, high efficiency, high-intensity characteristics.In addition, blade down, be subjected to the interference of various vibration shape vibration frequencies in working order, and blade should have very strong anti-vibration ability; Blade root is a key component, and it will bear the effect of the various stress of blade each several part, also plays a part simultaneously to accept and transmit, and this just requires blade root can bear the effect of big stress under the condition of high temperature.
Before mid-term nineteen sixties, the regulating stage blade of 50MW and 100MW steam turbine set all is single self-crown blades producing according to former Soviet Union traditional mode, by two bizets and blade root lower end by being welded to form one group.When moving, exist blade to meet with stresses greatly, vibrate vibration shape complexity in the power station, dynamic stress reaches the problem of safety reliability difference greatly, and be not suitable on the 200MW steam turbine set, using.
The model utility content
The purpose of this utility model provides a kind of 50MW, 100MW, the special-purpose twins' regulating stage blade of 200MW steam turbine set, this blade can solve the regulating stage blade that uses in existing 50MW and the 100MW steam turbine set, ability, the safety reliability of exist blade to meet with stresses greatly, shock type vibration frequency interference performance is poor, bearing big stress are poor, and are not suitable for the problem used on the 200MW steam turbine set.
The utility model is made up of blade working part, blade root and shroud; The height H of blade working part is 20～80mm, and the axial width B of blade working part is 40～80mm, and the molded lines of blade working part is the uniform section molded lines; Blade root is the rectangle cuboid of double pitch, and blade root and two blade workings are partly made one; Shroud adopts slab construction, and the thickness K of shroud is 3～8mm, and the rivet head and the shroud dislocation of blade working part upper end are riveted together, and form the vane group structure by one group of blade working part with shroud.
The utlity model has following beneficial effect: one, the molded lines of blade working part of the present utility model is the uniform section molded lines, its rigidity is bigger, blade root is the rectangle cuboid of double pitch, so design, the rigidity of its blade root is single-unit 16 times apart from blade root, the bending resistance square is former single-unit 4 times apart from blade root, greatly reduces the stress of leaf root part.Two, the utility model has solved regulating stage blade and has met with stresses greatly, vibrated vibration shape complicated problems, and have characteristics easy to manufacture, easy to assembly, safe and reliable to operation, can bear the effect of big stress under the condition of high temperature, and can avoid the interference of various vibration frequencies, can satisfy the needs that 50MW, 100MW, 200MW steam turbine set regulating stage blade use.
Description of drawings
Fig. 1 is a main TV structure schematic representation of the present utility model, and Fig. 2 is the left view of Fig. 1, and Fig. 3 is the plan view of Fig. 1, and Fig. 4 is an assembling schematic representation of the present utility model.Fig. 5 is the molded lines part plan view of individual blade.
Embodiment
Embodiment one: in conjunction with Fig. 1～Fig. 5 present embodiment is described, present embodiment is made up of blade working part 1, blade root 2 and shroud 3; The height H of blade working part 1 is 20～80mm, and the axial width B of blade working part 1 is 40～80mm, and the molded lines of blade working part 1 is the uniform section molded lines; Blade root 2 is the rectangle cuboid of double pitch, and blade root 2 and two blade working parts 1 are made one; Shroud 3 adopts slab construction, and the thickness K of shroud 3 is 3～8mm, and the rivet head 1-1 of blade working part 1 upper end and shroud 3 dislocation are riveted together, and form the vane group structure by one group of blade working part 1 and shroud 3.
The section area of described blade working part 1 is 5～15cm
2, maximum ga(u)ge Dmax is that 12～20mm, trailing edge thickness δ are that 0.6～1.5mm, established angle β y are that 70～80 °, chord length b are that 41～82mm, bending resistance square are 1～3cm
3The moment of inertia of blade root 2 is 30～100cm
4, the bending resistance square is 8～70cm
3
Embodiment two: present embodiment is described in conjunction with Fig. 1～Fig. 5, present embodiment and embodiment one difference are: the height H of the blade working part 1 of present embodiment is 34mm, the axial width B of blade working part 1 is 50mm, and the thickness K of shroud 3 is 4mm.
The section area of described blade working part 1 is 6.48cm
2, maximum ga(u)ge Dmax be 16.4mm, trailing edge thickness δ be 0.8mm, established angle β y be 77 ° 22 ', chord length b is that 51.406mm, bending resistance square are 1.47cm
3The moment of inertia of blade root 2 is 40.6cm
4, the bending resistance square is 13.823cm
3
Claims (2)
1, a kind of 50MW, 100MW, the special-purpose twins' regulating stage blade of 200MW steam turbine set, it is made up of blade working part (1), blade root (2) and shroud (3); The height H that it is characterized in that blade working part (1) is 20～80mm, and the axial width B of blade working part (1) is 40～80mm, and the molded lines of blade working part (1) is the uniform section molded lines; Blade root (2) is the rectangle cuboid of double pitch, and blade root (2) is made one with two blade working parts (1); Shroud (3) adopts slab construction, and the thickness K of shroud (3) is 3～8mm, and the rivet head (1-1) of blade working part (1) upper end is riveted together with shroud (3) dislocation, forms the vane group structure by one group of blade working part (1) and shroud (3).
2,50MW according to claim 1,100MW, the special-purpose twins' regulating stage blade of 200MW steam turbine set is characterized in that the section area of blade working part (1) is 5～15cm
2, maximum ga(u)ge Dmax is that 12～20mm, trailing edge thickness δ are that 0.6～1.5mm, established angle β y are that 70 °～80 °, chord length b are 41～82mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021226 CN2916139Y (en) | 2006-07-14 | 2006-07-14 | Dedicated twinborn governing-stage blade for steam turbine set of 50MW, 100MW, and 200MW |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021226 CN2916139Y (en) | 2006-07-14 | 2006-07-14 | Dedicated twinborn governing-stage blade for steam turbine set of 50MW, 100MW, and 200MW |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2916139Y true CN2916139Y (en) | 2007-06-27 |
Family
ID=38187048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620021226 Expired - Lifetime CN2916139Y (en) | 2006-07-14 | 2006-07-14 | Dedicated twinborn governing-stage blade for steam turbine set of 50MW, 100MW, and 200MW |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2916139Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027536A (en) * | 2021-04-23 | 2021-06-25 | 沈阳德瓦特汽轮动力有限责任公司 | Regulating-stage moving blade for industrial steam turbine |
| CN114922695A (en) * | 2022-04-22 | 2022-08-19 | 沈阳德瓦特汽轮动力有限责任公司 | Moving blade shroud for adjusting stage of industrial steam turbine and optimization method thereof |
-
2006
- 2006-07-14 CN CN 200620021226 patent/CN2916139Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027536A (en) * | 2021-04-23 | 2021-06-25 | 沈阳德瓦特汽轮动力有限责任公司 | Regulating-stage moving blade for industrial steam turbine |
| CN114922695A (en) * | 2022-04-22 | 2022-08-19 | 沈阳德瓦特汽轮动力有限责任公司 | Moving blade shroud for adjusting stage of industrial steam turbine and optimization method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070627 |
|
| EXPY | Termination of patent right or utility model |