CN105527082A - Blade root protection device for blade with blade root kerve - Google Patents
Blade root protection device for blade with blade root kerve Download PDFInfo
- Publication number
- CN105527082A CN105527082A CN201511014983.5A CN201511014983A CN105527082A CN 105527082 A CN105527082 A CN 105527082A CN 201511014983 A CN201511014983 A CN 201511014983A CN 105527082 A CN105527082 A CN 105527082A
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- CN
- China
- Prior art keywords
- blade root
- blade
- kerve
- compact heap
- chock
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Harvester Elements (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a blade root protection device for a blade with a blade root kerve. The protection device can solve the problems that the blade root bottom and the kerve are easily deformed, impressed and the like under the action of saturated jacking force during static frequency detection of the existing blade with a blade root kerve. The protection device comprises a blade root kerve plug and pressure blocks, the blade root kerve plug comprises a bottom protection bar portion and a lug portion which are integrated and connected into a whole in a T-shaped section mode, the lug portion extends in the length direction of the bottom protection bar portion, the lug portion is embedded into the blade root kerve of the blade, the pressure blocks are respectively arranged at two ends of the bottom protection bar portion in the length direction, and each pressure block is provided with an L-shaped boss which is hooked and positioned with an arc boss on the side of the blade root of the blade.
Description
Technical field
The present invention relates to the quiet frequency detection field of blade, be specially the blade root protective device of the blade with blade root kerve.
Background technology
The static frequency of blade of tenon-tooth blade-root detects and normally applies a saturated pressure in blade root bottom surface, and the workplace making the blade root workplace of blade and frequency measurement take turns geosynclinal block is fitted, and then carries out blade frequency.A lot of blade all can in blade root floor design kerve structure now, this just causes blade root bottom surface can be used for, and site area that frequency measurement holds out against sharply reduces, under powerful pressure effect, blade root bottom surface and kerve are easily out of shape, there is impression, if the blade therefore with kerve needs frequency measurement, normally first frequency measurement, blade root kerve is reprocessed after blade frequencies detection is qualified, this brings great inconvenience to scheduling of production on the one hand, on the other hand, blade is after blade root kerve processes, if find the profile of blade again, some position such as integral shroud does not reach requirement needs pincers to repair, or user proposes the rectification requirement to this product when checking and accepting, blade then after pincers are repaiied or rectified and improved will inevitably bring the change of blade actual frequency values, thus the blade frequencies numerical value causing preceding working procedure to be measured is inaccurate, need frequency measurement again, and now blade root bottom surface, kerve processes, again powerful during frequency measurement bottom pressure will make blade root bottom surface be out of shape, kerve dimension overproof and kerve profile subside, user is finally caused to accept.
Summary of the invention
The invention provides the blade root protective device of the blade with blade root kerve, it can solve existing blade blade root bottom surface and kerve when carrying out quiet frequency and detecting with blade root kerve and easily produce the problem of distortion, impression equivalent damage by saturated pressure effect.
There is the blade root protective device of the blade of blade root kerve, it is characterized in that: it comprises blade root kerve chock and compact heap, described blade root kerve chock comprises and arranges ceiling portion and projection portion bottom all-in-one-piece, and the T-shaped cross section in ceiling portion, described bottom and projection portion links into an integrated entity, described projection portion extends along the length direction in ceiling portion, described bottom, the cooperation of described projection portion is flush-mounted in the blade root kerve of blade, the both ends of the length direction in ceiling portion, described bottom are separately installed with described compact heap, described compact heap is provided with L shape boss, the circular arc boss of described L shape boss and blade root sidepiece hooks to close and locates.
Further, the both sides end face of the length direction in ceiling portion, described bottom has threaded hole, and described threaded hole and described compact heap are bolted connection.
Further; the two ends of the length direction in described projection portion are provided with the protuberance at the both ends protruding from ceiling portion, described bottom; one side of described compact heap relatively described L shape boss has Baltimore groove; described protuberance is flush-mounted in described Baltimore groove and the end face in the ceiling portion, bottom of the open end of the Baltimore groove of described compact heap and described blade root kerve chock is fitted; the both sides that described compact heap is positioned at described Baltimore groove have kidney-shaped unthreaded hole, and described bolt is threaded through after described kidney-shaped unthreaded hole with the threaded hole in ceiling portion, described bottom.
Further, the width in the projection portion of described blade root kerve chock is consistent with the width of blade root kerve, transition fit between described projection portion and blade kerve.
Further, the height in the projection portion of described blade root kerve chock is greater than the depth capacity of blade root kerve.
Further, the length 0.1mm ~ 0.2mm less of the minimum material of blade root width in the ceiling portion, bottom of described blade root kerve chock.
Beneficial effect of the present invention is: the projection portion of blade root kerve chock is fitted together to and is assemblied in blade root kerve thus plays effective protective effect to blade root protector; When blade carries out the detection of quiet frequency, the ceiling portion, bottom of blade root kerve chock becomes the stress surface of saturation pressure, the frequency measurement state of blade can be made to improve blade frequencies accuracy of detection and stability closer to the duty of blade, blade root bottom surface can be protected again not damage by external force; Meanwhile, the compact heap of both sides can ensure blade root kerve chock can not from blade come off simultaneously protect blade root side do not damage by external force; Therefore blade root protective device of the present invention can available protecting blade root kerve, blade root bottom surface and blade root side injury-free when frequency detecting; thus can ensure that the accuracy that blade frequencies detects can ensure the blade quality of production again; also greatly reduce the pincers finishing reason that blade causes because of frequency measurement damage simultaneously, effectively enhance productivity.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram that the present invention has the blade root protective device of the blade of blade root kerve;
Fig. 2 is the side-looking structural representation that the present invention has the blade root protective device of the blade of blade root kerve;
Fig. 3 is the main TV structure schematic diagram that the present invention has the blade root protective device middle period foundation slot plug block of the blade of blade root kerve;
Fig. 4 is that structure for amplifying schematic diagram is looked on the right side of Fig. 3;
Fig. 5 is the main TV structure schematic diagram that the present invention has compact heap in the blade root protective device of the blade of blade root kerve;
Fig. 6 is the right TV structure schematic diagram of Fig. 5;
Fig. 7 is the plan structure schematic diagram of Fig. 6.
Reference numeral: 10-blade root kerve chock; Ceiling portion bottom 11-; 111-threaded hole; 112-end face; 12-projection portion; 13-protuberance; 20-compact heap; 21-L shape boss; 22-Baltimore groove; 23-end face; 24-kidney-shaped unthreaded hole; 30-blade; 31-blade root; 32-blade root kerve; 33-circular arc boss; 40-bolt.
embodiment
See Fig. 1, Fig. 2, the present invention has the blade root protective device of the blade of blade root kerve, it comprises blade root kerve chock 10 and compact heap 20, the two ends of the length direction of blade root kerve chock 10 are separately installed with a compact heap 20, blade root kerve chock 10 comprises and to arrange bottom all-in-one-piece ceiling portion 11 and projection portion 12, and ceiling portion, bottom 11 and T-shaped cross section, projection portion 12 link into an integrated entity, projection portion 12 extends along the length direction in ceiling portion, bottom 11, projection portion 12 transition fit is installed in the blade root kerve 32 of blade 30, the both ends of the length direction in ceiling portion 11, bottom are separately installed with compact heap 20, compact heap 20 is provided with L shape boss 21, L shape boss 21 hooks to close with the circular arc boss 32 of blade root 31 sidepiece and locates, the both sides end face of the length direction in ceiling portion 11, bottom has threaded hole 111, see Fig. 3 and Fig. 4, the two ends of the length direction in projection portion 12 are provided with the protuberance 13 at the both ends protruding from ceiling portion 11, bottom, one side of the relative L shape boss 21 of compact heap 20 has Baltimore groove 22, see Fig. 5, Fig. 6 and Fig. 7, protuberance 13 is flush-mounted in Baltimore groove 22 and opening one side end face 23 of the Baltimore groove 22 of compact heap 20 and fits with the end face 112 in the ceiling portion, bottom 11 of blade root kerve chock 10, the both sides that compact heap 20 is positioned at Baltimore groove 22 have kidney-shaped unthreaded hole 24, bolt 40 is threaded with the threaded hole 111 in ceiling portion, bottom 11 through after kidney-shaped unthreaded hole 24, thus compact heap 20 adjustment in a longitudinal direction can be realized, further guarantee blade root kerve chock 11 is connected with reliable between two ends compact heap 20.
In apparatus of the present invention, the width b in the projection portion 12 of blade root kerve chock 10 is consistent with the width of blade root kerve; The height h in the projection portion 12 of blade root kerve chock 10 is greater than the depth capacity of blade root kerve; The length a 0.1mm ~ 0.2mm less of the minimum material of blade root width in the ceiling portion, bottom 11 of blade root kerve chock 10.
Before to blade frequency, first apparatus of the present invention are installed on blade root bottom surface, its concrete installation process is: first assemble what a compact heap 20 in one end of blade root kerve chock 10, then projection portion 11 setting-in of blade root kerve chock 10 is entered in blade root kerve 32, and the L shape boss of the compact heap 20 assembled hook is shared the boss of blade root side and compact heap 20 and blade root side are adjacent to, then another block compact heap 20 is assembled to the other end of blade root kerve chock 10; After apparatus of the present invention being installed on blade root bottom surface, then carry out frequency measurement by blade integral lifting loading frequency measurement wheel geosynclinal block.Apparatus of the present invention can also be used for the protection to blade root kerve, blade root bottom surface and blade root side in blade production flow process.
Claims (6)
1. there is the blade root protective device of the blade of blade root kerve, it is characterized in that: it comprises blade root kerve chock and compact heap, described blade root kerve chock comprises and arranges ceiling portion and projection portion bottom all-in-one-piece, and the T-shaped cross section in ceiling portion, described bottom and projection portion links into an integrated entity, described projection portion extends along the length direction in ceiling portion, described bottom, the cooperation of described projection portion is flush-mounted in the blade root kerve of blade, the both ends of the length direction in ceiling portion, described bottom are separately installed with described compact heap, described compact heap is provided with L shape boss, the circular arc boss of described L shape boss and blade root sidepiece hooks to close and locates.
2. the blade root protective device with the blade of blade root kerve according to claim 1, is characterized in that: the both sides end face of the length direction in ceiling portion, described bottom has threaded hole, and described threaded hole and described compact heap are bolted connection.
3. the blade root protective device with the blade of blade root kerve according to claim 2, it is characterized in that: the two ends of the length direction in described projection portion are provided with the protuberance at the both ends protruding from ceiling portion, described bottom, one side of described compact heap relatively described L shape boss has Baltimore groove, described protuberance is flush-mounted in described Baltimore groove and the end face in the ceiling portion, bottom of the open end of the Baltimore groove of described compact heap and described blade root kerve chock is fitted, the both sides that described compact heap is positioned at described Baltimore groove have kidney-shaped unthreaded hole, described bolt is threaded through after described kidney-shaped unthreaded hole with the threaded hole in ceiling portion, described bottom.
4. according to the described blade root protective device with the blade of blade root kerve arbitrary in claims 1 to 3; it is characterized in that: the width in the projection portion of described blade root kerve chock is consistent with the width of blade root kerve, transition fit between described projection portion and blade kerve.
5., according to the described blade root protective device with the blade of blade root kerve arbitrary in claims 1 to 3, it is characterized in that: the height in the projection portion of described blade root kerve chock is greater than the depth capacity of blade root kerve.
6., according to the described blade root protective device with the blade of blade root kerve arbitrary in claims 1 to 3, it is characterized in that: the length 0.1mm ~ 0.2mm less of the minimum material of blade root width in the ceiling portion, bottom of described blade root kerve chock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014983.5A CN105527082B (en) | 2015-12-31 | 2015-12-31 | The blade root protection device of blade with blade root kerve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014983.5A CN105527082B (en) | 2015-12-31 | 2015-12-31 | The blade root protection device of blade with blade root kerve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105527082A true CN105527082A (en) | 2016-04-27 |
| CN105527082B CN105527082B (en) | 2017-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511014983.5A Active CN105527082B (en) | 2015-12-31 | 2015-12-31 | The blade root protection device of blade with blade root kerve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105527082B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180842A (en) * | 2016-06-23 | 2016-12-07 | 无锡透平叶片有限公司 | A kind of correction processing method of quiet frequency detection fixture race molded line |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB643914A (en) * | 1948-03-08 | 1950-09-27 | Joseph Stanley Hall | Improvements in and relating to turbine or like blade securing means |
| US3720480A (en) * | 1971-06-29 | 1973-03-13 | United Aircraft Corp | Rotor construction |
| CN2620090Y (en) * | 2003-05-30 | 2004-06-09 | 上海汽轮机有限公司 | Steam turbine rotor reaction type T type blade root vane circumference expansion device |
| CN2786576Y (en) * | 2005-04-29 | 2006-06-07 | 东方汽轮机厂 | Steamer lamina frequency measuring equipment |
| CN203337257U (en) * | 2013-07-23 | 2013-12-11 | 杭州汽轮机械设备有限公司 | Steam turbine rotor blade frequency measurement tooling fixture |
| CN104564801A (en) * | 2014-11-18 | 2015-04-29 | 东方电气集团东方汽轮机有限公司 | Axial positioning structure for compressor blade in impeller groove |
| CN204788650U (en) * | 2015-07-27 | 2015-11-18 | 哈尔滨汽轮机厂有限责任公司 | Measure universal fixturing of quiet frequency of blade |
| CN205352673U (en) * | 2015-12-31 | 2016-06-29 | 无锡透平叶片有限公司 | Blade root protection device of blade with blade root kerve |
-
2015
- 2015-12-31 CN CN201511014983.5A patent/CN105527082B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB643914A (en) * | 1948-03-08 | 1950-09-27 | Joseph Stanley Hall | Improvements in and relating to turbine or like blade securing means |
| US3720480A (en) * | 1971-06-29 | 1973-03-13 | United Aircraft Corp | Rotor construction |
| CN2620090Y (en) * | 2003-05-30 | 2004-06-09 | 上海汽轮机有限公司 | Steam turbine rotor reaction type T type blade root vane circumference expansion device |
| CN2786576Y (en) * | 2005-04-29 | 2006-06-07 | 东方汽轮机厂 | Steamer lamina frequency measuring equipment |
| CN203337257U (en) * | 2013-07-23 | 2013-12-11 | 杭州汽轮机械设备有限公司 | Steam turbine rotor blade frequency measurement tooling fixture |
| CN104564801A (en) * | 2014-11-18 | 2015-04-29 | 东方电气集团东方汽轮机有限公司 | Axial positioning structure for compressor blade in impeller groove |
| CN204788650U (en) * | 2015-07-27 | 2015-11-18 | 哈尔滨汽轮机厂有限责任公司 | Measure universal fixturing of quiet frequency of blade |
| CN205352673U (en) * | 2015-12-31 | 2016-06-29 | 无锡透平叶片有限公司 | Blade root protection device of blade with blade root kerve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180842A (en) * | 2016-06-23 | 2016-12-07 | 无锡透平叶片有限公司 | A kind of correction processing method of quiet frequency detection fixture race molded line |
| CN106180842B (en) * | 2016-06-23 | 2018-03-13 | 无锡透平叶片有限公司 | A kind of amendment processing method of quiet frequency detection fixture race molded line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105527082B (en) | 2017-11-07 |
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