CN211230559U - Vibration damper for turbine blade - Google Patents
Vibration damper for turbine blade Download PDFInfo
- Publication number
- CN211230559U CN211230559U CN201922408913.8U CN201922408913U CN211230559U CN 211230559 U CN211230559 U CN 211230559U CN 201922408913 U CN201922408913 U CN 201922408913U CN 211230559 U CN211230559 U CN 211230559U
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- Prior art keywords
- ring
- blade
- turbine blade
- damping
- lateral wall
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- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 description 9
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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Abstract
The utility model discloses a vibration damper for steam turbine blade, including the steam turbine blade body, the steam turbine blade body includes blade and interior ring body, on the ring body lateral wall including blade evenly distributed, it is a plurality of the blade outer joint has same clamping ring, clamping ring lateral wall fixedly connected with restrictor ring, the restrictor ring is provided with solid fixed ring outward, a plurality of connecting blocks of fixedly connected with on the solid fixed ring inside wall, the connecting block tip passes through damper and the contact of restrictor ring. The utility model discloses, through being provided with clamping ring and restriction ring at the blade lateral wall, come to restrict the restriction ring through the grip block that sets up on the fixed plate on the restriction ring lateral wall, the effect of the contact block of supporting outside and interior contact block is stabilized the restriction ring that produces vibrations down, makes the blade shake of its connection reduce.
Description
Technical Field
The utility model relates to a damping device technical field especially relates to a damping device for steam turbine blade.
Background
The blade is a key part of the steam turbine and is one of the finest and most important parts. It is subjected to the combined action of high temperature, high pressure, huge centrifugal force, steam exciting force, corrosion and vibration and water drop erosion in a wet steam area under extremely severe conditions.
The turbine blade bears larger bending moment in work under the action of high-temperature and high-pressure steam, the moving blade in high-speed operation also bears higher centrifugal force, the blade in a wet swallow steam area, particularly the last stage, is subjected to electrochemical corrosion and water drop erosion, and also bears complex excitation force, the shake generated by the turbine blade is more and more obvious under the extremely harsh condition for a long time, and the blade needs to be damped at the moment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the big shortcoming of current turbine blade shake after long-time use, and the damping device who is used for turbine blade who proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a vibration damper for steam turbine blade, includes the steam turbine blade body, the steam turbine blade body includes blade and interior ring body, on the inner ring body lateral wall including blade evenly distributed, it is a plurality of the blade outer joint has same clamping ring, clamping ring lateral wall fixedly connected with limit ring, the limit ring is provided with solid fixed ring outward, a plurality of connecting blocks of fixedly connected with on the solid fixed ring inside wall, the connecting block tip passes through damper and the contact of limit ring.
Preferably, damper includes the fixed plate of fixed connection on the connecting block, the fixed plate bottom is provided with the grip block of two relative settings, is located one side be connected with outer touch multitouch through spring assembly in the grip block, the opposite side the grip block is connected with same interior touch multitouch through the spring assembly who sets up from top to bottom.
Preferably, the outer contact block and the inner contact block respectively contact opposite sides of the limiting ring.
Preferably, spring assembly is including seting up the shock attenuation groove on the grip block, the penetration mouth has been seted up to shock attenuation groove one side, there is the shock attenuation pole that is the T type shock attenuation tank bottom through spring coupling, the shock attenuation pole other end is connected with outer conflict piece.
Preferably, the outer guide board that is the slope setting is all seted up to outer conflict piece both sides, interior conflict piece both ends are all seted up and are the interior guide board that the slope set up.
Preferably, the limiting ring is semi-annular, and the outer abutting block and the inner abutting block are both semi-annular.
Compared with the prior art, the beneficial effects of the utility model are that:
through being provided with clamping ring and restriction ring at the blade lateral wall, come to restrict the restriction ring through the grip block that sets up on the fixed plate on the restriction ring lateral wall, stabilize the restriction ring that produces vibrations under the effect of outer touch multitouch and interior touch multitouch, make the blade shake of its connection reduce.
Drawings
Fig. 1 is a schematic structural view of a damping device for a turbine blade according to the present invention;
fig. 2 is a schematic side view of a damping device for a turbine blade according to the present invention;
fig. 3 is a schematic view of a limiting ring of the damping device for a turbine blade according to the present invention.
In the figure: 1 blade, 2 internal ring bodies, 3 connecting rings, 4 limiting rings, 5 fixing rings, 6 connecting blocks, 7 fixing plates, 8 clamping plates, 9 outer contact blocks, 10 inner contact blocks, 11 damping rods, 12 outer guide plates and 13 inner guide plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a vibration damping device for a steam turbine blade, including a steam turbine blade body, which is a prior art and will not be described herein, the steam turbine blade body includes a blade 1 and an inner ring 2, the blade 1 is uniformly distributed on the outer side wall of the inner ring 2, a plurality of blades 1 are externally connected with a same connecting ring 3, wherein the connecting ring 3 is used for connecting a plurality of blades 1 with different torsions, the outer side wall of the connecting ring 3 is fixedly connected with a limit ring 4, the limit ring 4 is in a semi-ring shape, the semi-ring shape is arranged to convert the original horizontal vibration force at the connection with the connecting ring 3 into horizontal and vertical directions, reduce the damage of vibration to the connection, prevent the connection of the connecting ring 3 and the blade 1 from being broken when the vibration is too large, a fixing ring 5 is arranged outside the limit ring 4, the fixing ring 5 is fixed on the outer cover of the steam turbine to realize, a plurality of connecting blocks 6 are fixedly connected to the inner side wall of the fixing ring 5, and the end parts of the connecting blocks 6 are in contact with the limiting ring 4 through damping mechanisms.
Further, damper includes fixed plate 7 of fixed connection on connecting block 6, 7 bottoms of fixed plate are provided with two relative grip blocks 8 that set up, be connected with outer touch multitouch 9 through spring assembly in the grip block 8 that is located one side, the grip block 8 of opposite side is connected with same interior touch multitouch 10 through the spring assembly who sets up from top to bottom, outer touch multitouch 9 conflicts with interior touch multitouch 10 respectively with the relative both sides of restrictor ring 4, wherein the effort setting of outer touch multitouch 9 is at the intermediate position of grip block 8, the effort setting of interior touch multitouch 10 is at the upper and lower both ends of grip block 8, make can offset the vibrations ability abundant that produces the blade when carrying out the use.
Further, spring assembly has seted up on one side of the damping groove and has run through the mouth including seting up the damping groove on grip block 8, and the damping groove bottom has the shock attenuation pole 11 that is the T type through spring coupling, and it is prior art to spring, does not do here and describe repeatedly, and its shock attenuation pole 11 adopts flexible stronger metal material to make, and the 11 other ends of shock attenuation pole are connected with outer conflict piece 9, and wherein the contact block 10 that supports is connected for upper and lower respectively being provided with a plurality ofly with shock attenuation pole 11, realizes connecting.
Further, outer guide plates 12 that are the slope setting are all seted up to outer feeler block 9 both ends, and inner guide plate 13 that is the slope setting is all seted up at interior feeler block 10 both ends, and wherein inner guide plate 13 inwards inclines, and its outer guide plate 12 outwards inclines, leads rotatory confinement ring 4 through setting up outer guide plate 12 and inner guide plate 13 for confinement ring 4 is in the shock-absorbing state constantly.
In the utility model
When the turbine blade 1 is used, a connecting ring is arranged on the original turbine blade 1, a fixing ring 5 is fixed on the outer cover of the turbine, a limiting ring 4 is positioned between an outer contact block 9 and an inner contact block 10, when the turbine works, the connected blade 1 connected with the turbine blade is driven to rotate, vibration can be generated when the blade 1 is too long, the vibration force generated by one end of the blade 1 far away from an inner ring body 2 is maximum, and at the moment, the end positioned at the maximum vibration force cancels the vibration force under the action of the limiting ring 4 connected with the connecting ring 3;
when producing vibrations, the retainer ring 4 can produce vibrations, the axial vibrations that the retainer ring 4 produced can make the effect that is located the outer contact block 9 of retainer ring 4 both sides and interior contact block 10 under, cushion and make the vibrations that produce reduce and dissipate, make the retainer ring 4 stabilize under the effect of shock-absorbing rod 11 and spring, the vibrations of the clamping ring 3 of being connected with retainer ring 4 can reduce, thereby the vibrations that the time blade 1 produced reduce in the one end of keeping away from the vibrations source, thereby it is minimum to guarantee that blade 1 shake that causes when blade 1 produces vibrations, thereby guarantee blade 1's normal operating.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a vibration damper for steam turbine blade, includes the steam turbine blade body, its characterized in that, the steam turbine blade body includes blade (1) and interior ring body (2), ring body (2) lateral wall including blade (1) evenly distributed is on, and is a plurality of blade (1) outer connection has same clamping ring (3), clamping ring (3) lateral wall fixedly connected with retainer ring (4), retainer ring (4) are provided with solid fixed ring (5) outward, a plurality of connecting blocks (6) of fixedly connected with on solid fixed ring (5) inside wall, connecting block (6) tip passes through damper and the contact of retainer ring (4).
2. The vibration damping device for the turbine blade according to claim 1, characterized in that the vibration damping mechanism comprises a fixing plate (7) fixedly connected to the connecting block (6), two clamping plates (8) oppositely arranged are arranged at the bottom of the fixing plate (7), an outer contact block (9) is connected to the inside of the clamping plate (8) on one side through a spring device, and the same inner contact block (10) is connected to the clamping plate (8) on the other side through a spring device arranged up and down.
3. A device for damping vibrations in blades of steam turbines according to claim 2, characterized in that said outer (9) and inner (10) blocks respectively interfere with opposite sides of the containment ring (4).
4. The vibration damping device for the turbine blade according to claim 2, wherein the spring device comprises a damping groove formed in the clamping plate (8), a through hole is formed in one side of the damping groove, a T-shaped damping rod (11) is connected to the bottom of the damping groove through a spring, and the other end of the damping rod (11) is connected with the outer contact block (9).
5. The vibration damping device for the turbine blade according to claim 2, wherein the outer contact block (9) has outer guide plates (12) at both ends and an inner guide plate (13) at both ends, wherein the outer guide plates are obliquely arranged, and the inner contact block (10) has inner guide plates at both ends.
6. A device for damping vibrations in blades for steam turbines according to claim 2, characterized in that said containment ring (4) is semi-annular, both its outer (9) and inner (10) abutment blocks being semi-annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922408913.8U CN211230559U (en) | 2019-12-28 | 2019-12-28 | Vibration damper for turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922408913.8U CN211230559U (en) | 2019-12-28 | 2019-12-28 | Vibration damper for turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211230559U true CN211230559U (en) | 2020-08-11 |
Family
ID=71916427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922408913.8U Active CN211230559U (en) | 2019-12-28 | 2019-12-28 | Vibration damper for turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211230559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013079A (en) * | 2022-07-08 | 2022-09-06 | 泰安凯顺机电工程有限公司 | Steam turbine with long service life |
-
2019
- 2019-12-28 CN CN201922408913.8U patent/CN211230559U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013079A (en) * | 2022-07-08 | 2022-09-06 | 泰安凯顺机电工程有限公司 | Steam turbine with long service life |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231102 Granted publication date: 20200811 |
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| PP01 | Preservation of patent right |