CN206035539U - Steam turbine moving vane shrcud ring - Google Patents
Steam turbine moving vane shrcud ring Download PDFInfo
- Publication number
- CN206035539U CN206035539U CN201621010163.9U CN201621010163U CN206035539U CN 206035539 U CN206035539 U CN 206035539U CN 201621010163 U CN201621010163 U CN 201621010163U CN 206035539 U CN206035539 U CN 206035539U
- Authority
- CN
- China
- Prior art keywords
- shroud
- adjacent
- groove
- draw
- steam turbine
- 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 - Fee Related
Links
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to a steam turbine moving vane shrcud ring. It includes the moving vane, clearance between the two adjacent moving vane integral shroud sagittal planes for be greater than 0, less than or equal to 0.03mm, the top surface of moving vane integral shroud is equipped with the draw -in groove, is equipped with the shrcud ring rather than matched with in the draw -in groove, the draw -in groove that the shrcud ring passed on a plurality of moving vane integral shrouds couples together a plurality of moving vanes, the both ends of shrcud ring link firmly rather than the moving vane integral shroud respectively, the adjacent both ends of two adjacent shrcud rings are located the draw -in groove on the same moving vane integral shroud. The utility model has the advantages of reasonable design, the vibration resistance of moving vane can be effectively improved, turbine unit's security is guaranteed.
Description
Technical field
The utility model is related to a kind of steam turbine moving vane shroud.
Background technology
The whole level movable vane piece of steam turbine is assemblied on the race of rotor, and its integral shroud circumferentially cooperatively forms whole coil structures.But
Fit-up gap is left between adjacent shrouds sagittal plane still so that movable vane piece can not form effective whole coil structures.In high velocity air
Exciting force effect under, movable vane sector-meeting produce forced vibration, when the frequency of forced vibration is identical with the movable vane piece natural frequency of vibration
Resonance can be caused, large magnitude is produced, alternate stress is sharply increased, actuated blade can be led fatigue fracture occurs, and then be affected whole
The security of individual unit.
Utility model content
The utility model provides a kind of steam turbine moving vane shroud, and its reasonable in design can effectively improve movable vane piece
Vibration resistance, it is ensured that the security of Steam Turbine, solve problems of the prior art.
The utility model by solving the technical scheme that adopts of above-mentioned technical problem is：It includes movable vane piece, and adjacent two move
Gap between blade shroud sagittal plane is that the top surface of moving blade shroud is provided with draw-in groove, draw-in groove more than 0, less than or equal to 0.03mm
The shroud being matched therewith is provided with inside, some movable vane pieces are coupled together through the draw-in groove on some moving blade shrouds, enclosed by shroud
The two ends of band are connected with its moving blade shroud respectively, and the adjacent both ends of adjacent two shroud are located at the draw-in groove on same moving blade shroud
It is interior.
The side of the moving blade shroud is provided with lug boss, and opposite side is provided with the notch portion being engaged with lug boss.
The lug boss is wing angle.
The shroud is arc.
The draw-in groove is dovetail groove, and the cross section of the shroud is swallow-tail form.
The length of the shroud is 250～300mm, and the width of shroud upper surface is 8～16mm.
The adjacent both ends of adjacent two shroud are symmetrical set on the draw-in groove of same moving blade shroud.
The adjacent both ends of adjacent two shroud at intervals of 5～6mm.
The two ends of the shroud are fixed by dotting punch with the integral shroud of its movable vane piece respectively.
The shroud is made up of 1Cr13,2Cr13,1Cr12Mo or 1C11MoV.
The utility model adopts such scheme, with advantages below：
1st, the gap between adjacent two moving blade shrouds sagittal plane is, more than 0, less than or equal to 0.03mm, so to ensure that
Relative close laminating between adjacent shrouds, reduces vibrations.
2nd, some movable vane pieces are coupled together by every shroud through the draw-in groove on some moving blade shrouds, the two ends point of shroud
It is not connected with its moving blade shroud so as to form blade group, whole circle movable vane piece is connected into an entirety, is made by some shrouds
Blade rigidly increases, and changes the natural frequency of vibration of movable vane piece, so as to avoid resonance, reduces the amplitude of movable vane piece, improves movable vane piece
Vibration resistance.
3rd, the side of moving blade shroud is provided with lug boss, and opposite side is provided with the notch portion being engaged with lug boss, by convex
The portion of rising and notch portion can not only make tight, reduction vibrations of fitting between adjacent shrouds；Sealing gland effect can also be played, steam is prevented
Leak between adjacent shrouds；And can play a part of to protect movable vane piece steam output side, mitigate movable vane piece steam output side at a high speed
It is deformed under the impact of air-flow.
4th, shroud is arc, is conducive to shroud to connect some movable vane pieces through the draw-in groove on some moving blade shrouds
Come.
5th, draw-in groove is dovetail groove, and the cross section of the shroud is swallow-tail form, and dovetail groove snap effect is good, is easy to processing system
Make.
6th, the adjacent both ends of adjacent two shroud are located in the draw-in groove on same moving blade shroud, can make whole circle movable vane piece string
It is unified into an entirety；The adjacent both ends of adjacent two shroud are symmetrical set on the draw-in groove of same moving blade shroud, Neng Goubao
Card movable vane piece uniform force；The adjacent both ends of adjacent two shroud at intervals of 5～6cm, not only contribute to shroud with dynamic blade and blade
The fixation of hat, the also operation for adjacent shroud leave operating space.
7th, the two ends of shroud are fixed by dotting punch with the integral shroud of its movable vane piece respectively, and the fixed form of dotting punch fixes effect
It is really good, it is easy to disassemble.
8th, shroud is made up of 1Cr13,2Cr13,1Cr12Mo or 1C11MoV.Shroud and working environment one residing for movable vane piece
Sample, while receive high rotating speed（3000r/min）And high temperature（450 DEG C to 540 DEG C or so）Impact, 1Cr13,2Cr13,1Cr12Mo
Or 1C11MoV has higher room temperature strength, plasticity, toughness and heat resistance, there are preferable damping property and less linear expansion coefficient.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Vertical view deployed configuration schematic diagrams of the Fig. 2 for Fig. 1.
Fig. 3 is A A in Fig. 1 to cross section structure diagram.
Structural representations of the Fig. 4 for moving blade shroud.
Side-looking part-structure schematic diagrams of the Fig. 5 for Fig. 4.
Fig. 6 is use state structural representation of the present utility model.
In figure, 1, shroud, 2, integral shroud, 3, draw-in groove, 4, lug boss, 5, notch portion.
Specific embodiment
For can clearly illustrate the technical characterstic of this programme, below by specific embodiment, and its accompanying drawing is combined, to this reality
It is described in detail with new.
As shown in Fig. 1～Fig. 6, the utility model includes movable vane piece, the gap between adjacent two moving blade shrouds, 2 sagittal plane
α is that the top surface of moving blade shroud 2 is provided with draw-in groove 3 more than 0, less than or equal to 0.03mm, is provided with enclosing of being matched therewith in draw-in groove 3
Some movable vane pieces are coupled together by band 1, shroud 1 through the draw-in groove 3 on some moving blade shrouds 2, the two ends of shroud 1 respectively with its
Moving blade shroud 2 is fixed by dotting punch.Draw-in groove 3 is dovetail groove, and the cross section of the shroud 1 is swallow-tail form.Adjacent two shroud 1
Adjacent both ends be located in the draw-in groove 3 on same moving blade shroud 2, and be symmetrical arranged.Between the adjacent both ends of adjacent two shroud 1
Every β be 5～6mm.The side of moving blade shroud 2 is provided with lug boss 4, and opposite side is provided with the notch portion 5 being engaged with lug boss 4.
Lug boss 4 is wing angle.Shroud 1 is arc.The length of shroud 1 is 250～300mm, and the width of 1 upper surface of shroud is 8～16mm.
Shroud 1 is made up of 1Cr13,2Cr13,1Cr12Mo or 1C11MoV.
Gap α between adjacent two moving blade shrouds, 2 sagittal plane is, more than 0, less than or equal to 0.03mm, so to ensure that
Relative close laminating between adjacent shrouds 2, reduces vibrations.
Some movable vane pieces are coupled together by every shroud 1 through the draw-in groove 3 on some moving blade shrouds 2, the two ends of shroud 1
It is connected with its moving blade shroud 2 so as to form blade group respectively, whole circle movable vane piece is connected into an entirety by some shrouds 1,
Movable vane piece is rigidly increased, change the natural frequency of vibration of movable vane piece, so as to avoid resonance, reduce the amplitude of movable vane piece, improve dynamic
The vibration resistance of blade.
The side of moving blade shroud 2 is provided with lug boss 4, and opposite side is provided with the notch portion 5 being engaged with lug boss 4, is passed through
Lug boss 4 and notch portion 5 can not only make tight, reduction vibrations of fitting between adjacent shrouds 2；Sealing gland effect can also be played, is prevented
Only steam is from leaking between adjacent shrouds 2；And can play a part of to protect movable vane piece steam output side, mitigate movable vane piece steam output side
It is deformed under the impact of high velocity air.
Shroud 1 is arc, is conducive to shroud 1 to connect some movable vane pieces through the draw-in groove 3 on some moving blade shrouds 2
Come.
Draw-in groove 3 is dovetail groove, and the cross section of the shroud 1 is swallow-tail form, and dovetail groove snap effect is good, is easy to processing system
Make.
The adjacent both ends of adjacent two shroud 1 are located in the draw-in groove 3 on same moving blade shroud 2, can make whole circle movable vane piece
It is connected into an entirety；The adjacent both ends of adjacent two shroud 1 are symmetrical set on the draw-in groove 3 of same moving blade shroud 2, energy
Enough ensure movable vane piece uniform force；The interval β of the adjacent both ends of adjacent two shroud 1 is 5～6mm, not only contributes to shroud 1 and moves
The fixation of blade shroud 2, the also operation for adjacent shroud 1 leave operating space.
The two ends of shroud 1 are fixed by dotting punch with the integral shroud 2 of its movable vane piece respectively, and the fixed form of dotting punch fixes effect
It is really good, it is easy to disassemble.
Shroud 1 is made up of 1Cr13,2Cr13,1Cr12Mo or 1C11MoV.Shroud 1 and working environment one residing for movable vane piece
Sample, while receive high rotating speed（3000r/min）And high temperature（450 DEG C to 540 DEG C or so）Impact, 1Cr13,2Cr13,1Cr12Mo
Or 1C11MoV has higher room temperature strength, plasticity, toughness and heat resistance, there are preferable damping property and less linear expansion coefficient.
Above-mentioned specific embodiment cannot function as the restriction to the utility model protection domain, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all falls within guarantor of the present utility model
In the range of shield.
The utility model does not describe part in detail, is the known technology of those skilled in the art of the present technique.
Claims (10)
1. a kind of steam turbine moving vane shroud, it is characterised in that：Including movable vane piece, between adjacent two moving blade shrouds sagittal plane
Gap is that the top surface of moving blade shroud is provided with draw-in groove more than 0, less than or equal to 0.03mm, is provided with enclosing of being matched therewith in draw-in groove
Some movable vane pieces are coupled together by band, shroud through the draw-in groove on some moving blade shrouds, the two ends of shroud respectively with its movable vane
Piece integral shroud is connected, and the adjacent both ends of adjacent two shroud are located in the draw-in groove on same moving blade shroud.
2. a kind of steam turbine moving vane shroud according to claim 1, it is characterised in that：The side of the moving blade shroud
Lug boss is provided with, opposite side is provided with the notch portion being engaged with lug boss.
3. a kind of steam turbine moving vane shroud according to claim 2, it is characterised in that：The lug boss is wing angle.
4. a kind of steam turbine moving vane shroud according to claim 1, it is characterised in that：The shroud is arc.
5. a kind of steam turbine moving vane shroud according to claim 1, it is characterised in that：The draw-in groove be dovetail groove, institute
The cross section for stating shroud is swallow-tail form.
6. a kind of steam turbine moving vane shroud according to claim 5, it is characterised in that：The length of the shroud is 250
～300mm, the width of shroud upper surface is 8～16mm.
7. a kind of steam turbine moving vane shroud according to claim 1, it is characterised in that：The adjacent both ends of adjacent two shroud
It is symmetrical set on the draw-in groove of same moving blade shroud.
8. a kind of steam turbine moving vane shroud according to claim 7, it is characterised in that：The adjacent both ends of adjacent two shroud
At intervals of 5～6mm.
9. a kind of steam turbine moving vane shroud according to claim 1, it is characterised in that：The two ends of the shroud respectively with
The integral shroud of its movable vane piece is fixed by dotting punch.
10. a kind of steam turbine moving vane shroud according to claim 1, it is characterised in that：The shroud by 1Cr13,
2Cr13,1Cr12Mo or 1C11MoV make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621010163.9U CN206035539U (en) | 2016-08-31 | 2016-08-31 | Steam turbine moving vane shrcud ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621010163.9U CN206035539U (en) | 2016-08-31 | 2016-08-31 | Steam turbine moving vane shrcud ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035539U true CN206035539U (en) | 2017-03-22 |
Family
ID=58300254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621010163.9U Expired - Fee Related CN206035539U (en) | 2016-08-31 | 2016-08-31 | Steam turbine moving vane shrcud ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035539U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2016
- 2016-08-31 CN CN201621010163.9U patent/CN206035539U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Torresi et al. | Accurate numerical simulation of a high solidity Wells turbine | |
| JP2002147203A (en) | Row of fluid guide member for turbo machinery | |
| CN103032107A (en) | Tip shroud assembly with contoured seal rail fillet | |
| CN101660486B (en) | With the wind turbine blade of cross webs | |
| JP2015121220A (en) | Snubber configurations for turbine rotor blades | |
| CN104471192A (en) | Damper system and corresponding turbine | |
| CN206035539U (en) | Steam turbine moving vane shrcud ring | |
| CN109630207A (en) | A kind of hollow turbine rotor blade with integral shroud reinforcing rib | |
| CN110418874B (en) | Blade and damping sleeve for rotor assembly | |
| CN203948136U (en) | The low pressure stage group exhaust stage blade of leaving area 3.6m2 variable speed air cooling industrial steam turbine | |
| CN203035269U (en) | Novel steam seal of steam turbine | |
| CN206092081U (en) | Steam turbine linear leaf assembly with shock -absorbing structure | |
| CN104832217A (en) | Girdle structure for turbine moving blade | |
| CN204113356U (en) | The level steam turbine dual row governing stage structures such as High Temperature High Pressure 25MW | |
| CN105114629B (en) | A kind of honeycomb seal rotor structure | |
| KR101173365B1 (en) | A Blade with Vortex Cell for Wind Turbine | |
| CN105179309B (en) | A kind of compressor blade | |
| RU99066U1 (en) | AXIAL MULTI-STAGE TURBO MACHINE ROTOR | |
| RU2386816C1 (en) | High-temperature gas turbine | |
| CN208587191U (en) | A kind of sealing gland of steam turbine | |
| CN103982250B (en) | Metal rubber shock absorber with cooling function | |
| US9121285B2 (en) | Turbine and method for reducing shock losses in a turbine | |
| CN203655358U (en) | Incongruous reticular arrangement half section cut loose tie wire long blade vibration reduction structure | |
| CN203348159U (en) | Fixing structure for vanes of axial fan | |
| CN104047805B (en) | A kind of trunnion axis and the general wind generator device of vertical axis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20210831 |