CN103758579A - Marine steam turbine crown blade wrapped tiepiece vibration reducing structure and assembling method thereof - Google Patents
Marine steam turbine crown blade wrapped tiepiece vibration reducing structure and assembling method thereof Download PDFInfo
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- CN103758579A CN103758579A CN201410037040.3A CN201410037040A CN103758579A CN 103758579 A CN103758579 A CN 103758579A CN 201410037040 A CN201410037040 A CN 201410037040A CN 103758579 A CN103758579 A CN 103758579A
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Abstract
The invention relates to a blade tiepiece vibration reducing structure and an assembling method thereof, in particular to a marine steam turbine crown blade wrapped tiepiece vibration reducing structure and an assembling method thereof. The problems that an existing blade tiepiece vibration reducing structure is large in gap between sets of shroud rings and large in steam loss, and middle tiepieces reduce the through-flow flowing efficiency are solved. The blade structure is a blade body top blade crown structure, a blade crown is provided with vibration reducing tiepiece installation grooves, and vibration reducing tiepieces are installed inside the installation grooves and grind the two sides of the installation grooves. A straight arm structure peens and wraps the vibration reducing tiepieces in the vibration reducing tiepiece installation grooves. After the blade structure of the blade body top blade crown is assembled in a whole circle mode, installation grooves matched with the vibration reducing tiepieces are machined in the blade crown, and the two sides of each installation groove are provided with technical grooves. The vibration reducing tiepieces are arranged inside the installation grooves, the blade crown is ground by a grinding tool, the vibration reducing tiepieces are peenned and wrapped in the installation grooves, and finally the blade crown is machined in place according to the size requirement. The blade tiepiece vibration reducing structure is used for reducing vibration of a marine steam turbine blade.
Description
Technical field
The present invention relates to a kind of steam turbine blade tendon vibration damping structure and assembly method thereof, be specifically related to a kind of marine turbing self-crown blade outsourcing lacing wire vibration damping structure and assembly method thereof, belong 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, in blade and blade, is installed with one lacing wire with it.This kind of structure had relatively high expectations to assembly crewman's technical ability.In addition, because the gap between each group shroud is larger, Steam loss is more, and middle lacing wire has also reduced current flow efficiency.
Summary of the invention
The present invention exists in order to solve existing blade lacing vibration damping structure that respectively to organize between shroud gap large, 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 marine turbing self-crown blade outsourcing lacing wire vibration damping structure and the assembly method thereof of good current flow efficiency.
The present invention 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 of the present invention 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.Guaranteed 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 assembly method of marine turbing self-crown blade outsourcing lacing wire vibration damping structure of the present invention, concrete steps are: after the whole circle of blade structure that blade blade top carries integral shroud has assembled, according to the diameter of damp-ing wire, the damp-ing wire mounting groove that processing is mated with damp-ing wire on integral shroud, and respectively process a technology groove in the both sides of damp-ing wire mounting groove; Through packing damp-ing wire into after the assay was approved in damp-ing wire mounting groove, with rolling tool, roll integral shroud, by damp-ing wire peening and be wrapped in damp-ing wire mounting groove, finally integral shroud is put in place according to size requirement processing.
Preferred: the joint of described damp-ing wire is positioned in the middle of single integral shroud.Guaranteed that better blade frequencies avoids rate, improved effectiveness in vibration suppression.
The present invention compared with prior art has following effect:
The present invention 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, when 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 invention 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 preferred embodiment of the present invention 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.Guaranteed 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 of the present invention, 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 respectively process a technology groove 2-2 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, with rolling tool, roll integral shroud 2, 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.Guaranteed 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 (9)
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 1mm between described two straight-arm structures.
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.
8. the assembly method of marine turbing self-crown blade outsourcing lacing wire vibration damping structure, it is characterized in that: 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) mating with damp-ing wire (3) in the upper processing of integral shroud (2), and respectively process a technology groove (2-2) in the both sides of damp-ing wire mounting groove (2-1); Through after the assay was approved, in damp-ing wire mounting groove (2-1), pack damp-ing wire (3) into, with rolling tool, roll integral shroud (2), by damp-ing wire (3) peening and be wrapped in damp-ing wire mounting groove (2-1), finally integral shroud (2) is put in place according to size requirement processing.
9. the assembly method of marine turbing self-crown blade outsourcing lacing wire vibration damping structure according to claim 8, is characterized in that: the joint of described damp-ing wire (3) is positioned in the middle of single integral shroud (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037040.3A CN103758579B (en) | 2014-01-26 | 2014-01-26 | The assembly method of marine turbing blade with tips outsourcing lacing wire vibration damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037040.3A CN103758579B (en) | 2014-01-26 | 2014-01-26 | The assembly method of marine turbing blade with tips outsourcing lacing wire vibration damping structure |
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| Publication Number | Publication Date |
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| CN103758579A true CN103758579A (en) | 2014-04-30 |
| CN103758579B CN103758579B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410037040.3A Expired - Fee Related CN103758579B (en) | 2014-01-26 | 2014-01-26 | The assembly method of marine turbing blade with tips outsourcing lacing wire vibration damping structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026172A (en) * | 2018-09-25 | 2018-12-18 | 中国船舶重工集团公司第七0三研究所 | A kind of band-like damp-ing wire vibration-proof structure of blade with tips |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1165005A (en) * | 1914-05-14 | 1915-12-21 | Westinghouse Machine Co | Blade construction for elastic-fluid turbines. |
| DE2606891A1 (en) * | 1975-03-12 | 1976-09-23 | Stal Laval Turbin Ab | Method of fixing blades to axial-flow turbine rotors - peripheral lacing wire secures interlocking blades positively, root shoulder is peened over |
| US4699569A (en) * | 1985-07-05 | 1987-10-13 | Bbc Brown, Boveri & Company, Limited | Rotor blade ring of an axial flow turbomachine |
| JPH09324603A (en) * | 1996-06-10 | 1997-12-16 | Mitsubishi Heavy Ind Ltd | Turbine rotor blade of high speed rotary machine |
| US20020122738A1 (en) * | 2001-03-05 | 2002-09-05 | Van Daam Thomas J. | Article having imbedded cavity |
| EP2019188A1 (en) * | 2007-07-25 | 2009-01-28 | Siemens Aktiengesellschaft | Rotor stage with damping element |
| EP2573327A1 (en) * | 2011-09-20 | 2013-03-27 | Siemens Aktiengesellschaft | Damping wire, corresponding rotor blade stage, steam turbine and producing method |
| CN203655359U (en) * | 2014-01-26 | 2014-06-18 | 中国船舶重工集团公司第七�三研究所 | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure |
-
2014
- 2014-01-26 CN CN201410037040.3A patent/CN103758579B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1165005A (en) * | 1914-05-14 | 1915-12-21 | Westinghouse Machine Co | Blade construction for elastic-fluid turbines. |
| DE2606891A1 (en) * | 1975-03-12 | 1976-09-23 | Stal Laval Turbin Ab | Method of fixing blades to axial-flow turbine rotors - peripheral lacing wire secures interlocking blades positively, root shoulder is peened over |
| US4699569A (en) * | 1985-07-05 | 1987-10-13 | Bbc Brown, Boveri & Company, Limited | Rotor blade ring of an axial flow turbomachine |
| JPH09324603A (en) * | 1996-06-10 | 1997-12-16 | Mitsubishi Heavy Ind Ltd | Turbine rotor blade of high speed rotary machine |
| US20020122738A1 (en) * | 2001-03-05 | 2002-09-05 | Van Daam Thomas J. | Article having imbedded cavity |
| EP2019188A1 (en) * | 2007-07-25 | 2009-01-28 | Siemens Aktiengesellschaft | Rotor stage with damping element |
| EP2573327A1 (en) * | 2011-09-20 | 2013-03-27 | Siemens Aktiengesellschaft | Damping wire, corresponding rotor blade stage, steam turbine and producing method |
| CN203655359U (en) * | 2014-01-26 | 2014-06-18 | 中国船舶重工集团公司第七�三研究所 | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026172A (en) * | 2018-09-25 | 2018-12-18 | 中国船舶重工集团公司第七0三研究所 | A kind of band-like damp-ing wire vibration-proof structure of blade with tips |
| CN109026172B (en) * | 2018-09-25 | 2024-02-02 | 中国船舶重工集团公司第七0三研究所 | From banded damping lacing wire strip vibration attenuation structure of taking guan leaf |
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| CN103758579B (en) | 2015-12-02 |
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