CN202493301U - Novel clapboard blade division structure - Google Patents
Novel clapboard blade division structure Download PDFInfo
- Publication number
- CN202493301U CN202493301U CN2012201032985U CN201220103298U CN202493301U CN 202493301 U CN202493301 U CN 202493301U CN 2012201032985 U CN2012201032985 U CN 2012201032985U CN 201220103298 U CN201220103298 U CN 201220103298U CN 202493301 U CN202493301 U CN 202493301U
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- China
- Prior art keywords
- blade
- clapboard
- novel
- dividing plate
- division structure
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- Expired - Fee Related
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- 238000005192 partition Methods 0.000 claims description 10
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a novel clapboard blade division structure. The novel clapboard blade division structure comprises an upper half clapboard and a lower half clapboard, wherein a middle dividing surface is arranged between the upper half clapboard and the lower half clapboard; a fixed blade located at the place where the middle dividing surface locates is in an integral molding structure; a portion of the fixed blade is integrally fixed with the upper half clapboard or the lower half clapboard while the other portion is externally exposed; and the width of the fixed part of the fixed blade is greater than that of the externally exposed part. The novel clapboard blade division structure is completely satisfied with the requirements on blade intensity; and the mounting condition can be satisfied after the blade is trimmed, so that blade at each level and at the place where the middle dividing surface of the clapboard locates can work as an integral blade without causing adverse effects on an airflow in a flow channel of a steam turbine. Therefore, the novel clapboard blade division structure, disclosed by the utility model, has the advantage of greatly adding economic benefits.
Description
Technical field
The utility model relates to the dividing plate blade partition structure of steam turbine.
Background technique
Partition board of steam turbine is divided into two halves up and down, and guide vane is evenly distributed in upper and lower two semiclapboards.Joint, the split left and right sides at upper and lower semiclapboard must be cut off blade along split; Weld with superior hemiseptum and lower semi-diaphragm respectively then; Make its upper and lower two blades when combining be linked to be a whole blade profile, form a complete steam passage, as shown in Figure 1.This structure of cutting apart blade is able to prolonged application owing to conveniently design and processing.But because the quantity of steam turbine central diaphragm is maximum, this structure of cutting apart blade the gap occurs easily at the blade joint, leaks vapour thereby produce, and can have a negative impact to the work steam flow, has reduced the economic benefit of dividing plate.
Summary of the invention
The purpose of the utility model is for overcoming the deficiency of above-mentioned existing technology, a kind of new-type dividing plate blade partition structure is provided, and it can improve the structure of dividing plate, solves the situation of blade subdivided gap gas leakage, improves the economic benefit of dividing plate.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of new-type dividing plate blade partition structure; Comprise superior hemiseptum and lower semi-diaphragm; Be split between superior hemiseptum and the lower semi-diaphragm, the stator blade that is positioned at the split place structure that is formed in one, the part of this stator blade and superior hemiseptum or lower semi-diaphragm are fixed as one; Another part exposes, and this stator blade is fixed the width of part greater than the width of exposed parts.
The width of said exposed parts is no more than 1/3 of stator blade overall width.Rationally arrange blade; The mounting point of superior hemiseptum (1) and lower semi-diaphragm (2) blade of holding can suitably be adjusted, the part that the split place lets blade expose as far as possible less (for guarantee the general exposed parts width of stator blade intensity be no more than integral width 1/3).
Said stator blade and lower semi-diaphragm are welded as a whole.
Exposed parts back of the body arc both sides, said split place can fall in the superior hemiseptum it with respect to all narrow 1.0 ± 0.2mm of standing part smoothly.
In existing structure be with two independently stator blade be loaded on the dividing plate in second respectively and unnecessary part prescinded, then along with second joint on the dividing plate is accomplished the blade butt joint, make it form complete blade composition steam passage.But since blade be two bodies and along with the passive combination of dividing plate; And dividing plate and blade all might produce bigger error in the process of processing and installation; Thereby form bigger gas leakage so this structure may form bigger gap at the blade joint, produce bigger leakage losses.The stator blade that complete stator blade of this novel employing replaces script to be made up of two halves can guarantee the integrity of blade, reduces leakage losses.The beneficial effect of the utility model is; This structure satisfies the requirement of blade strength fully; Can satisfy installation conditions after blade repaired; Make each grade dividing plate split place blade come work, can not have a negative impact, increased its economic benefit greatly steam turbine runner steam flow with whole blade profile.
Description of drawings
Fig. 1 is that existing technology central diaphragm blade is divided unfolded drawing;
Fig. 2 is the utility model structure dividing plate mounted blade figure;
Fig. 3 is the utility model split blade installation and processing structure schematic representation.
Wherein 1. superior hemiseptums, 2. lower semi-diaphragm, 3. split, 4. stator blade, 5. standing part, 6. exposed parts, 7. split blade convexity.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
As shown in Figure 2, a kind of new-type dividing plate blade partition structure comprises superior hemiseptum 1 and lower semi-diaphragm 2; Between superior hemiseptum 1 and the lower semi-diaphragm 2 is split 3, the stator blade 4 that the is positioned at split 3 places structure that is formed in one, and these stator blade 4 parts are fixed as one with lower semi-diaphragm 2; This part is a standing part 5; Another part exposes, and is exposed parts 6, and its key points in design is:
A. and the width of standing part 5 arrange blade greater than the reasonable wide of exposed parts 6; The institute's stator blade of holding 4 width of superior hemiseptum 1 and lower semi-diaphragm 2 needn't equate; Let the exposed parts 6 of stator blade 4 less at split 3 places as far as possible; The width of said exposed parts (h2 among Fig. 3) accounts for 1/3 of stator blade 4 overall widths (standing part 5+ exposed parts 6, the h3 among Fig. 3);
The stator blade 4 of b. striding split 3 no longer separates, and only is welded as a whole with lower semi-diaphragm 2;
C. will stride the head that split 3 blades expose, process, split blade convexity 7 both sides will respectively be cut 1.0 ± 0.2 mm (h1 among Fig. 3), it can be fallen in the superior hemiseptum 2 smoothly by Fig. 3.
This structure can be improved the structure of dividing plate, solves the situation of blade subdivided gap gas leakage, improves the economic benefit of dividing plate.
Claims (4)
1. new-type dividing plate blade partition structure; Comprising superior hemiseptum and lower semi-diaphragm, is split between superior hemiseptum and the lower semi-diaphragm, the stator blade that is positioned at the split place structure that is formed in one; It is characterized in that; This stator blade part is fixed as one with superior hemiseptum or lower semi-diaphragm, and another part exposes, and the width of blade of standing part is greater than the width of blade of exposed parts.
2. new-type dividing plate blade partition structure as claimed in claim 1 is characterized in that the width of said exposed parts is no more than 1/3 of stator blade overall width.
3. according to claim 1 or claim 2 new-type dividing plate blade partition structure is characterized in that said stator blade and lower semi-diaphragm are welded as a whole.
4. according to claim 1 or claim 2 new-type dividing plate blade partition structure is characterized in that, said exposed parts back of the body arc both sides are with respect to all narrow 1.0 ± 0.2mm of standing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201032985U CN202493301U (en) | 2012-03-19 | 2012-03-19 | Novel clapboard blade division structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201032985U CN202493301U (en) | 2012-03-19 | 2012-03-19 | Novel clapboard blade division structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493301U true CN202493301U (en) | 2012-10-17 |
Family
ID=46999535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201032985U Expired - Fee Related CN202493301U (en) | 2012-03-19 | 2012-03-19 | Novel clapboard blade division structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150570A (en) * | 2015-04-09 | 2016-11-23 | 北京北重汽轮电机有限责任公司 | A kind of partition board of steam turbine and processing technique thereof |
-
2012
- 2012-03-19 CN CN2012201032985U patent/CN202493301U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150570A (en) * | 2015-04-09 | 2016-11-23 | 北京北重汽轮电机有限责任公司 | A kind of partition board of steam turbine and processing technique thereof |
| CN106150570B (en) * | 2015-04-09 | 2019-12-06 | 北京北重汽轮电机有限责任公司 | steam turbine partition plate and processing technology thereof |
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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: 20121017 Termination date: 20210319 |