CN208778045U - A kind of band-like damp-ing wire vibration-proof structure of blade with tips - Google Patents
A kind of band-like damp-ing wire vibration-proof structure of blade with tips Download PDFInfo
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- CN208778045U CN208778045U CN201821559200.0U CN201821559200U CN208778045U CN 208778045 U CN208778045 U CN 208778045U CN 201821559200 U CN201821559200 U CN 201821559200U CN 208778045 U CN208778045 U CN 208778045U
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- lacing wire
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- damp
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Abstract
A kind of band-like damp-ing wire vibration-proof structure of blade with tips, it belongs to energy power industry, and in particular to a kind of band-like damp-ing wire vibration-proof structure of blade with tips.When the purpose of this utility model is turbine rotor to be solved operating, blade will vibrate, and generates vibration stress, jeopardizes the problem of blade safety.The band-like damp-ing wire vibration-proof structure of blade with tips includes shroud blade, lacing wire connector I, lacing wire connector II, lacing wire connector III, lacing wire connector IV, fill block and solder；The shroud blade is made of blade and integral shroud, and in integral shroud lower end surface, middle position turning goes out band-like damp-ing wire slot；Lacing wire connector I, lacing wire connector II are packed into band-like damp-ing wire slot, and lacing wire connector III and lacing wire connector IV are packed into fore shaft, and the gap between lacing wire connector III and lacing wire connector IV is packed into fill block, are filled up solder on fill block surface and are carried out built-up welding.The utility model is mainly for the preparation of the band-like damp-ing wire vibration-proof structure of blade with tips.
Description
Technical field
The invention belongs to energy power industries, and in particular to a kind of band-like damp-ing wire vibration-proof structure of blade with tips.
Background technique
Blade injury is one of the main reason for steam turbine breaks down, and vibrating fatigue is lead to leaf destruction main
Reason.In the blade design of steam turbine, need to guarantee the safety of Marine Steam Turbine multi-state operation, the whole circle of damping structure connects
Connecing makes blade form whole circle in normal operation, and the dynamic stress that blade is born may be implemented and reach lesser numerical value, to guarantee
The fatigue resistance of blade controls in safer range, solves the problems, such as that free blade or group blade dynamic stress are not easy to reduce,
Adjustment vibration frequency of blade avoids each operating condition running speed of rotor.Work that previous riveting shroud structure blade is installed and disassembly changes the outfit
Skill is complicated, and band-like damp-ing wire structure is relatively easy convenient.
Summary of the invention
When the invention aims to solve turbine rotor operating, blade will vibrate, and generates vibration stress, jeopardizes
The problem of blade safety, and a kind of band-like damp-ing wire vibration-proof structure of blade with tips is provided.
A kind of band-like damp-ing wire vibration-proof structure of blade with tips, it includes shroud blade, lacing wire connector I, lacing wire company
Fitting II, lacing wire connector III, lacing wire connector IV, fill block and solder；
The shroud blade is made of blade and integral shroud, and blade is arranged in integral shroud upper surface, several shroud blades are assembled into
After circle, go out band-like damp-ing wire slot in the integral shroud lower end surface middle position turning of several shroud blades, the band-like damping is drawn
The section of muscle slot is dovetail-shape；
The section of lacing wire connector I is in a rectangular trapezoid, and the section of lacing wire connector II is in a rectangular trapezoid, and lacing wire connector
I section and the section mirror symmetry of lacing wire connector II, by the section of lacing wire connector I and the section group of lacing wire connector II
At swallow-tail form and band-like damp-ing wire slot cross-section swallow-tail form coincide；
The section of lacing wire connector III is in a rectangular trapezoid, and the section of lacing wire connector IV is in a rectangular trapezoid, and lacing wire connects
The section of part III and the section mirror symmetry of lacing wire connector IV, the length of lacing wire connector III and the length of lacing wire connector IV
It is equal；
Fore shaft, and the equal length of the length of fore shaft and lacing wire connector IV are set on band-like damp-ing wire slot, will be drawn
Muscle connector I and lacing wire connector II are packed into band-like damp-ing wire slot along fore shaft, and are guaranteed along band-like damp-ing wire slot length
The contact gap of two adjacent lacing wire connectors I of direction or lacing wire connector II is 0.1mm~0.2mm, in addition to fore shaft, in band
Lacing wire connector I and lacing wire connector II are filled up in shape damp-ing wire slot；
Lacing wire connector III and lacing wire connector IV are packed into fore shaft, lacing wire connector III and lacing wire connector IV it
Between gap be packed into fill block, fill block surface fill up solder carry out built-up welding.
The principle of the invention: under the action of the centrifugal force, the bizet of adjacent blades by contacting with each other two-by-two with damp-ing wire item,
The effects of forming whole circle blade, can passing through dry friction, collision in blade vibration dissipative part exciting force energy, is effectively reduced
Blade vibration stress plays the role of vibration damping, improves rotor operation security performance.
The invention has the advantages that can to reduce steamer motor-driven for a kind of band-like damp-ing wire vibration-proof structure of blade with tips of the present invention
The dynamic stress that blade is born reduces blade vibration amplitude, adjusts vibration frequency of blade, guarantees the safety of multi-state operation.
Detailed description of the invention
Fig. 1 is a kind of main view of the band-like damp-ing wire vibration-proof structure of blade with tips of the present invention；1 indicates hat leaf in figure
Piece, 1-3-1 indicate fore shaft；
Fig. 2 is the enlarged cross-sectional view of shroud blade, and 1-1 indicates that blade, 1-2 indicate that integral shroud, 1-3 indicate that band-like damping is drawn in figure
Muscle slot；
Fig. 3 is enlarged cross-sectional view of the Fig. 1 along P-P, and 1-1 indicates that blade, 1-2 indicate integral shroud in figure, and 4 indicate lacing wire connector
III, 5 indicate lacing wire connector IV, and 6 indicate fill block, and 7 indicate solder；
Fig. 4 is enlarged cross-sectional view of the Fig. 1 along N-N, and 1-1 indicates that blade, 1-2 indicate integral shroud in figure, and 2 indicate lacing wire connector
I, 5 indicate lacing wire connector II.
Specific embodiment
Specific embodiment 1: present embodiment is a kind of band-like damp-ing wire vibration-proof structure of blade with tips, it is wrapped
Include shroud blade 1, lacing wire connector I 2, lacing wire connector II 3, lacing wire connector III 4, lacing wire connector IV 5, fill block 6 and solder
7；
The shroud blade 1 is made of blade 1-1 and integral shroud 1-2, and blade 1-1 is arranged in the upper surface integral shroud 1-2, by several
After shroud blade 1 assembles lopping, go out band-like damp-ing wire in the lower end surface the integral shroud 1-2 middle position turning of several shroud blades 1
Slot 1-3, the section of the band-like damp-ing wire slot 1-3 are dovetail-shape；
The section of lacing wire connector I 2 is in a rectangular trapezoid, and the section of lacing wire connector II 3 is in a rectangular trapezoid, and lacing wire connects
The section mirror symmetry in the section of part I 2 and lacing wire connector II 3, section and lacing wire connector II 3 by lacing wire connector I 2
The swallow-tail form of section composition and the swallow-tail form in the band-like section damp-ing wire slot 1-3 are coincide；
The section of lacing wire connector III 4 is in a rectangular trapezoid, and the section of lacing wire connector IV 5 is in a rectangular trapezoid, and lacing wire connects
The section of fitting III 4 and the section mirror symmetry of lacing wire connector IV 5, the length and lacing wire connector IV 5 of lacing wire connector III 4
Equal length；
Fore shaft 1-3-1, and the length of fore shaft 1-3-1 and lacing wire connector IV 5 are set on band-like damp-ing wire slot 1-3
Lacing wire connector I 2 and lacing wire connector II 3 are packed into band-like damp-ing wire slot 1-3 along fore shaft 1-3-1, and protect by equal length
Card is along two adjacent lacing wire connectors I 2 of band-like damp-ing wire slot 1-3 length direction or the contact gap of lacing wire connector II 3
Lacing wire connector I 2 is filled up in band-like damp-ing wire slot 1-3 and is connected with lacing wire in addition to fore shaft 1-3-1 for 0.1mm~0.2mm
Part II 3；
Lacing wire connector III 4 and lacing wire connector IV 5 are packed into fore shaft 1-3-1, connected in lacing wire connector III 4 and lacing wire
Gap between fitting IV 5 is packed into fill block 6, fills up solder 7 on 6 surface of fill block and carries out built-up welding.
By II 3 length of reconditioning lacing wire connector I 2 and lacing wire connector, guarantee along the band-like length side damp-ing wire slot 1-3
It is 0.1mm~0.2mm to the contact gap of two adjacent lacing wire connectors I 2, guarantees along band-like damp-ing wire slot 1-3 length
The contact gap of two adjacent lacing wire connectors II 3 of direction is 0.1mm~0.2mm.
By fill block 6 by IV 5 jam-packed of lacing wire connector III 4 and lacing wire connector, allow reconditioning shroud fill block, in fill block 6
When the progress built-up welding of solder 7 is filled up on surface, solder 7 is not allowed to be welded on integral shroud 1-2, and 7 upper surface of heap postwelding butt welding material carries out
Equating must not be higher than the adjacent upper surface integral shroud 1-2.Postwelding carries out nondestructive flaw detection examination to seal location.
When turbine rotor operates, blade will vibrate, and generate vibration stress, jeopardize blade safety.Various blade things
Therefore statistical analysis show most of blade damage be due to blade vibration generate dynamic stress it is excessive caused by.The general work of blade
Make in the flow field of unsteady, transonic speed and viscosity, movable vane piece bears the exciting force effect that various exciting sources generate.Blade is swashing
Power of shaking effect is lower to occur forced vibration, and blade amplitude is big, and vibration frequency is low, and dynamic stress is high, and the accidents such as fracture easily occur.In order to
Blade safety is improved, it can be by riveting shroud, wearing the modes such as lacing wire item makes blade in groups or lopping.Traditional welding lacing wire,
Although the structures such as loose lacing wire can play the role of frequency modulation and vibration damping, turbine efficiency decline can be made about by often wearing a lacing wire
1%；Traditional riveting shroud blader skill is complicated, and clinching method is varied, and riveting proficiency is different, easily occurs
Fit clearance unevenness and other issues after riveting crackle, riveting.
A kind of band-like damp-ing wire vibration-proof structure of blade with tips of present embodiment under the action of the centrifugal force, adjacent blades
Bizet by contacting with each other two-by-two with damp-ing wire item, form whole circle blade, dry friction can be passed through in blade vibration, touched
The effects of hitting dissipative part exciting force energy, is effectively reduced blade vibration stress, plays the role of vibration damping, improves rotor operation peace
Full performance.And the resonance points on whole circle blade Campbell spectrogram are less than limited group blade resonance points, limited leaf in groups
Piece resonance points are less than free blade, for designing the more revolving speed naval steam turbines of multi-state, reduce resonance points and are designing
On be easier to avoid the resonance of lower mode frequency Yu each operating condition revolving speed.Even if furthermore whole circle the dynamic of blade answers under resonance state
Much smaller than conventional finite group blade of power, this is because the logarithmic decrement of whole circle blade is up to conventional finite group blade
5~10 times, and blade dynamic stress size is inversely proportional with its logarithmic decrement.
Specific embodiment 2: the difference of present embodiment and specific embodiment one is: two neighboring integral shroud it is straight
Face end in contact gap is 0.02mm, and the curved end contact gap of two neighboring integral shroud is 0.1mm~0.3mm.Other and specific reality
It is identical to apply mode one.
Specific embodiment 3: present embodiment is with one of specific embodiment one or two difference: being connect by lacing wire
Part I 2, lacing wire connector II 3, lacing wire connector III 4, lacing wire connector IV 5, fill block 6 and solder 7 form whole circle lacing wire structure.
The end in contact gap of facing directly of a integral shroud is 0.02mm, and the curved end contact gap of two neighboring integral shroud is 0.1mm~0.3mm.Its
He is the same as one or two specific embodiments.
Specific embodiment 4: one of present embodiment and specific embodiment one to three difference are: the whole circle is drawn
Muscle structure is packed into band-like damp-ing wire slot 1-3.Other are identical as specific embodiment one to three.
Specific embodiment 5: one of present embodiment and specific embodiment one to four difference are: the lacing wire connects
The contact gap of fitting I 2 and lacing wire connector II 3 is 0.1mm~0.3mm.Other are identical as specific embodiment one to four.
The content of present invention is not limited only to the content of the respective embodiments described above, the group of one of them or several specific embodiments
The purpose of invention also may be implemented in contract sample.
Using following verification experimental verifications effect of the present invention
Embodiment 1: a kind of band-like damp-ing wire vibration-proof structure of blade with tips, it includes shroud blade 1, lacing wire connector
I 2, lacing wire connector II 3, lacing wire connector III 4, lacing wire connector IV 5, fill block 6 and solder 7；
The shroud blade 1 is made of blade 1-1 and integral shroud 1-2, and blade 1-1 is arranged in the upper surface integral shroud 1-2, by several
After shroud blade 1 assembles lopping, go out band-like damp-ing wire in the lower end surface the integral shroud 1-2 middle position turning of several shroud blades 1
Slot 1-3, the section of the band-like damp-ing wire slot 1-3 are dovetail-shape；
The section of lacing wire connector I 2 is in a rectangular trapezoid, and the section of lacing wire connector II 3 is in a rectangular trapezoid, and lacing wire connects
The section mirror symmetry in the section of part I 2 and lacing wire connector II 3, section and lacing wire connector II 3 by lacing wire connector I 2
The swallow-tail form of section composition and the swallow-tail form in the band-like section damp-ing wire slot 1-3 are coincide；
The section of lacing wire connector III 4 is in a rectangular trapezoid, and the section of lacing wire connector IV 5 is in a rectangular trapezoid, and lacing wire connects
The section of fitting III 4 and the section mirror symmetry of lacing wire connector IV 5, the length and lacing wire connector IV 5 of lacing wire connector III 4
Equal length；
Fore shaft 1-3-1, and the length of fore shaft 1-3-1 and lacing wire connector IV 5 are set on band-like damp-ing wire slot 1-3
Lacing wire connector I 2 and lacing wire connector II 3 are packed into band-like damp-ing wire slot 1-3 along fore shaft 1-3-1, and protect by equal length
Card is along two adjacent lacing wire connectors I 2 of band-like damp-ing wire slot 1-3 length direction or the contact gap of lacing wire connector II 3
Lacing wire connector I 2 is filled up in band-like damp-ing wire slot 1-3 and is connected with lacing wire in addition to fore shaft 1-3-1 for 0.1mm~0.2mm
Part II 3；
Lacing wire connector III 4 and lacing wire connector IV 5 are packed into fore shaft 1-3-1, connected in lacing wire connector III 4 and lacing wire
Gap between fitting IV 5 is packed into fill block 6, fills up solder 7 on 6 surface of fill block and carries out built-up welding.
The end in contact gap of facing directly of two neighboring integral shroud is 0.02mm, and the curved end contact gap of two neighboring integral shroud is
0.1mm~0.3mm.
By lacing wire connector I 2, lacing wire connector II 3, lacing wire connector III 4, lacing wire connector IV 5, fill block 6 and solder
The 7 whole circle lacing wire structures of composition.The end in contact gap of facing directly of a integral shroud is 0.02mm, the curved end contact gap of two neighboring integral shroud
For 0.1mm~0.3mm.
The whole circle lacing wire structure is packed into band-like damp-ing wire slot 1-3.
The contact gap of the lacing wire connector I 2 and lacing wire connector II 3 is 0.1mm~0.3mm.
By II 3 length of reconditioning lacing wire connector I 2 and lacing wire connector, guarantee along the band-like length side damp-ing wire slot 1-3
It is 0.1mm~0.2mm to the contact gap of two adjacent lacing wire connectors I 2, guarantees along band-like damp-ing wire slot 1-3 length
The contact gap of two adjacent lacing wire connectors II 3 of direction is 0.1mm~0.2mm.
By fill block 6 by IV 5 jam-packed of lacing wire connector III 4 and lacing wire connector, allow reconditioning shroud fill block, in fill block 6
When the progress built-up welding of solder 7 is filled up on surface, solder 7 is not allowed to be welded on integral shroud 1-2, and 7 upper surface of heap postwelding butt welding material carries out
Equating must not be higher than the adjacent upper surface integral shroud 1-2.Postwelding carries out nondestructive flaw detection examination to seal location.
Claims (5)
1. a kind of band-like damp-ing wire vibration-proof structure of blade with tips, it is characterised in that a kind of band-like damping drawing of blade with tips
Rib vibration-proof structure includes shroud blade (1), lacing wire connector I (2), lacing wire connector II (3), lacing wire connector III (4), lacing wire
Connector IV (5), fill block (6) and solder (7)；
The shroud blade (1) is made of blade (1-1) and integral shroud (1-2), and blade (1-1) setting, will in the upper surface integral shroud (1-2)
After several shroud blades (1) assemble lopping, go out in integral shroud (1-2) lower end surface middle position turning of several shroud blades (1)
The section of band-like damp-ing wire slot (1-3), the band-like damp-ing wire slot (1-3) is dovetail-shape；
The section of lacing wire connector I (2) is in a rectangular trapezoid, and the section of lacing wire connector II (3) is in a rectangular trapezoid, and lacing wire connects
The section of part I (2) and the section mirror symmetry of lacing wire connector II (3), are connected by the section of lacing wire connector I (2) with lacing wire
The swallow-tail form of section composition and the swallow-tail form in band-like damp-ing wire slot (1-3) section of part II (3) are coincide；
The section of lacing wire connector III (4) is in a rectangular trapezoid, and the section of lacing wire connector IV (5) is in a rectangular trapezoid, and lacing wire connects
The section of fitting III (4) and the section mirror symmetry of lacing wire connector IV (5), the length of lacing wire connector III (4) and lacing wire connect
The equal length of fitting IV (5)；
Fore shaft (1-3-1) is set on band-like damp-ing wire slot (1-3), and the length of fore shaft (1-3-1) and lacing wire connector IV
(5) lacing wire connector I (2) and lacing wire connector II (3) are packed into band-like damp-ing wire along fore shaft (1-3-1) by equal length
In slot (1-3), and guarantee to connect along two adjacent lacing wire connectors I (2) of band-like damp-ing wire slot (1-3) length direction or lacing wire
The contact gap of fitting II (3) is 0.1mm~0.2mm, in addition to fore shaft (1-3-1), is filled up in band-like damp-ing wire slot (1-3)
Lacing wire connector I (2) and lacing wire connector II (3)；
Lacing wire connector III (4) and lacing wire connector IV (5) are packed into fore shaft (1-3-1), in lacing wire connector III (4) and drawn
Gap between muscle connector IV (5) is packed into fill block (6), fills up solder (7) on fill block (6) surface and carries out built-up welding.
2. the band-like damp-ing wire vibration-proof structure of a kind of blade with tips according to claim 1, it is characterised in that adjacent
The end in contact gap of facing directly of two integral shrouds is 0.02mm, and the curved end contact gap of two neighboring integral shroud is 0.1mm~0.3mm.
3. the band-like damp-ing wire vibration-proof structure of a kind of blade with tips according to claim 1, it is characterised in that by drawing
Muscle connector I (2), lacing wire connector II (3), lacing wire connector III (4), lacing wire connector IV (5), fill block (6) and solder (7)
Form whole circle lacing wire structure.
4. the band-like damp-ing wire vibration-proof structure of a kind of blade with tips according to claim 3, it is characterised in that described
Whole circle lacing wire structure is packed into band-like damp-ing wire slot (1-3).
5. the band-like damp-ing wire vibration-proof structure of a kind of blade with tips according to claim 1, it is characterised in that described
The contact gap of lacing wire connector I (2) and lacing wire connector II (3) is 0.1mm~0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821559200.0U CN208778045U (en) | 2018-09-25 | 2018-09-25 | A kind of band-like damp-ing wire vibration-proof structure of blade with tips |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821559200.0U CN208778045U (en) | 2018-09-25 | 2018-09-25 | A kind of band-like damp-ing wire vibration-proof structure of blade with tips |
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| CN208778045U true CN208778045U (en) | 2019-04-23 |
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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 |
-
2018
- 2018-09-25 CN CN201821559200.0U patent/CN208778045U/en active Active
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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