CN203655359U - Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure - Google Patents
Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure Download PDFInfo
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- CN203655359U CN203655359U CN201420050475.7U CN201420050475U CN203655359U CN 203655359 U CN203655359 U CN 203655359U CN 201420050475 U CN201420050475 U CN 201420050475U CN 203655359 U CN203655359 U CN 203655359U
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- blade
- damp
- pull bar
- vibration reduction
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Abstract
A marine turbine self crown blade externally-wrapped pull bar vibration reduction structure relates to a blade pull bar vibration reduction structure. The structure solves the problem that gaps between groups of girdles of the existing blade pull bar vibration reduction structure are large, the steam loss is large, and a middle pull bar reduces the through-flow flowing efficiency. The blade structure is that a crown structure is arranged at the top of a blade body, a vibration reduction pull bar installation groove is formed in the crown, the groove bottom of the vibration reduction pull bar installation groove is of a semicircular structure, the groove wall is of a straight wall structure, the axis direction of the semicircular structure is perpendicular to the cross section direction of the blade, the vibration reduction pull bar is installed in the vibration reduction pull bar installation groove, two sides of the vibration reduction pull bar installation groove are ground, and the straight arm structure tightens the vibration reduction pull bar and enables the pull bar to be wrapped in the vibration reduction pull bar installation groove. The structure is used for marine turbine blade vibration reduction.
Description
Technical field
The utility model relates to a kind of steam turbine blade tendon vibration damping structure, is specifically related to a kind of marine turbing self-crown blade outsourcing lacing wire vibration damping structure, belongs to ship power steam turbine technology field.
Background technique
Conventional marine turbing moving vane generally adopts riveted type shroud structure, and for blade frequency modulation, is installed with one lacing wire with it in blade and blade.This kind of structure had relatively high expectations to assembly crewman's technical ability.In addition, because the gap between each group of shroud is larger, Steam loss is more, and middle lacing wire has also reduced current flow efficiency.
Summary of the invention
The utility model exists between each group of shroud gap large in order to solve existing blade lacing vibration damping structure, Steam loss is many, middle lacing wire has reduced current flow efficiency, and then a kind of frequency modulation requirement that can meet blade is provided, there is again the marine turbing self-crown blade outsourcing lacing wire vibration damping structure of good current flow efficiency.
The utility model in order to solve the problems of the technologies described above taked technological scheme is:
Marine turbing self-crown blade outsourcing lacing wire vibration damping structure described in the utility model comprises blade and damp-ing wire, described blade structure is that blade blade top carries crown structure, on integral shroud, have damp-ing wire mounting groove, the bottom land of damp-ing wire mounting groove is semicircular structure, cell wall is straight-arm structure, the normal direction of the axial direction of semicircular structure and vane foil cross section is perpendicular, damp-ing wire is arranged in damp-ing wire mounting groove, roll damp-ing wire mounting groove both sides, straight-arm structure is by damp-ing wire peening and be wrapped in damp-ing wire mounting groove.
Preferred: the diameter of described damp-ing wire is consistent with the diameter of the semicircular structure of damp-ing wire mounting groove.So arrange, damp-ing wire coordinates closely with mounting groove.
Preferred: the diameter of described damp-ing wire is 3mm.So arrange, met requirement of strength.
Preferred: described in roll damp-ing wire mounting groove two rear flank, between two straight-arm structures, leave gap.Guarantee that better blade frequencies avoids rate, improved effectiveness in vibration suppression.
Preferred: the gap between described two straight-arm structures is 1mm.
Preferred: described damp-ing wire mounting groove both sides have technology groove.So arrange, be convenient to roller-compaction.
Preferred: described technology groove is semi-circular groove, diameter is 3mm.
The utility model compared with prior art has following effect:
The utility model is self-crown blade outsourcing lacing wire structure.Self-crown blade hat is very little with hat gap, has reduced leakage losses; In addition, the lacing wire that blade is installed with, is adjusted to integral shroud top, in guaranteeing that blade frequencies is avoided rate and effectiveness in vibration suppression, has reduced ventilation losses.By the optimization of two aspects, will greatly improve flow efficiency.Self-crown blade outsourcing lacing wire structure processing technology of the present utility model is simple in addition.
Accompanying drawing explanation
Fig. 1 is marine turbing self-crown blade outsourcing lacing wire vibration damping structure schematic diagram;
Fig. 2 is the self-crown blade structure figure that lacing wire is not installed.
In figure: 1-blade blade, 2-carries integral shroud, 3-damp-ing wire, 2-1 is damp-ing wire mounting groove, 2-2 is technology groove.
Embodiment
Elaborate with reference to the accompanying drawings the utility model preferred embodiment below.
Embodiment: the marine turbing self-crown blade outsourcing lacing wire vibration damping structure of present embodiment comprises blade and damp-ing wire 3, described blade structure is that blade blade 1 top carries integral shroud 2 structures, on integral shroud 2, have damp-ing wire mounting groove 2-1, the bottom land of damp-ing wire mounting groove 2-1 is semicircular structure, the normal direction of the axial direction of semicircular structure and vane foil cross section is perpendicular, damp-ing wire 3 is arranged in damp-ing wire mounting groove 2-1, and damp-ing wire 3 peenings are also wrapped in damp-ing wire mounting groove 2-1.
Further: the bottom land of damp-ing wire mounting groove 2-1 is semicircular structure, cell wall is straight-arm structure, the normal direction of the axial direction of semicircular structure and vane foil cross section is perpendicular, damp-ing wire 3 is arranged in damp-ing wire mounting groove 2-1, roll damp-ing wire mounting groove 2-1 both sides, straight-arm structure is by damp-ing wire 3 peenings and be wrapped in damp-ing wire mounting groove 2-1.
Further: the diameter of described damp-ing wire 3 is consistent with the diameter of the semicircular structure of damp-ing wire mounting groove 2-1.So arrange, damp-ing wire coordinates closely with mounting groove.
Further: the diameter of described damp-ing wire 3 is 3mm.So arrange, met requirement of strength.
Further: described in roll damp-ing wire mounting groove 2-1 two rear flank, between two straight-arm structures, leave gap.Guarantee that better blade frequencies avoids rate, improved effectiveness in vibration suppression.
Further: the gap between described two straight-arm structures is 1mm.
Further: described damp-ing wire mounting groove 2-1 both sides have technology groove 2-2.So arrange, be convenient to roller-compaction.
Further: described technology groove 2-2 is semi-circular groove, diameter is 3mm.
The assembly method of marine turbing self-crown blade outsourcing lacing wire vibration damping structure described in the utility model, concrete steps are: after the whole circle of blade structure that blade blade 1 top carries integral shroud 2 has assembled, according to the diameter of damp-ing wire 3, the damp-ing wire mounting groove 2-1 that processing is mated with damp-ing wire 3 on integral shroud 2, and at a technology groove 2-2 of the each processing in the both sides of damp-ing wire mounting groove 2-1; Through packing damp-ing wire 3 into after the assay was approved in damp-ing wire mounting groove 2-1, roll integral shroud 2 with rolling tool, by damp-ing wire 3 peenings and be wrapped in damp-ing wire mounting groove 2-1, finally integral shroud 2 is put in place according to size requirement processing.
Further: the joint of described damp-ing wire 3 is positioned in the middle of single integral shroud 2.Guarantee that better blade frequencies avoids rate, improved effectiveness in vibration suppression.
Present embodiment is the exemplary illustration to this patent just, does not limit its protection domain, and those skilled in the art can also change its part, as long as no the Spirit Essence that exceeds this patent, all in the protection domain of this patent.
Claims (7)
1. marine turbing self-crown blade outsourcing lacing wire vibration damping structure, comprise blade and damp-ing wire (3), it is characterized in that: described blade structure is that blade blade (1) top carries integral shroud (2) structure, on integral shroud (2), have damp-ing wire mounting groove (2-1), the bottom land of damp-ing wire mounting groove (2-1) is semicircular structure, cell wall is straight-arm structure, the normal direction of the axial direction of semicircular structure and vane foil cross section is perpendicular, damp-ing wire (3) is arranged in damp-ing wire mounting groove (2-1), roll damp-ing wire mounting groove (2-1) both sides, straight-arm structure is by damp-ing wire (3) peening and be wrapped in damp-ing wire mounting groove (2-1).
2. marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 1, is characterized in that: the diameter of described damp-ing wire (3) is consistent with the diameter of the semicircular structure of damp-ing wire mounting groove (2-1).
3. marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 2, is characterized in that: the diameter of described damp-ing wire (3) is 3mm.
4. marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 3, is characterized in that: described in roll damp-ing wire mounting groove (2-1) two rear flank, between two straight-arm structures, leave gap.
5. marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 4, is characterized in that: the gap between described two straight-arm structures is 1mm.
6. marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 2, is characterized in that: described damp-ing wire mounting groove (2-1) both sides have technology groove (2-2).
7. marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 6, is characterized in that: described technology groove (2-2) is semi-circular groove, and diameter is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050475.7U CN203655359U (en) | 2014-01-26 | 2014-01-26 | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050475.7U CN203655359U (en) | 2014-01-26 | 2014-01-26 | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655359U true CN203655359U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420050475.7U Expired - Fee Related CN203655359U (en) | 2014-01-26 | 2014-01-26 | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure |
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| CN (1) | CN203655359U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758579A (en) * | 2014-01-26 | 2014-04-30 | 中国船舶重工集团公司第七�三研究所 | Marine steam turbine crown blade wrapped tiepiece vibration reducing structure and assembling method thereof |
| CN114287871A (en) * | 2022-03-09 | 2022-04-08 | 杭州康基医疗器械有限公司 | Medical endoscope fluorescence cold light source camera system with high-efficient heat radiation structure |
-
2014
- 2014-01-26 CN CN201420050475.7U patent/CN203655359U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758579A (en) * | 2014-01-26 | 2014-04-30 | 中国船舶重工集团公司第七�三研究所 | Marine steam turbine crown blade wrapped tiepiece vibration reducing structure and assembling method thereof |
| CN103758579B (en) * | 2014-01-26 | 2015-12-02 | 中国船舶重工集团公司第七�三研究所 | The assembly method of marine turbing blade with tips outsourcing lacing wire vibration damping structure |
| CN114287871A (en) * | 2022-03-09 | 2022-04-08 | 杭州康基医疗器械有限公司 | Medical endoscope fluorescence cold light source camera system with high-efficient heat radiation structure |
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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: 20140618 Termination date: 20190126 |