CN207437259U - Midsplit type welds runner - Google Patents
Midsplit type welds runner Download PDFInfo
- Publication number
- CN207437259U CN207437259U CN201721464994.8U CN201721464994U CN207437259U CN 207437259 U CN207437259 U CN 207437259U CN 201721464994 U CN201721464994 U CN 201721464994U CN 207437259 U CN207437259 U CN 207437259U
- Authority
- CN
- China
- Prior art keywords
- blade
- crown
- runner
- band
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
This application discloses a kind of midsplit types to weld runner, and including band blade crown and with ring under blade, the blade-section with blade crown is fixed together with the blade-section with ring under blade.It is described with blade crown and the fixed form with ring under blade to be welded and fixed, it is labeled on the band blade and is provided with screw hole, it is provided at the center with blade crown through the tonifying Qi hole of entire blade crown, the band blade crown is stainless steel solid forging band blade crown, and ring is ring under stainless steel solid forging band blade under the band blade.The utility model has the advantages that：With blade crown and with an only weld seam between ring under blade, and weld seam is located at the low stress area of midsplit type welding runner, weld seam is not easy to crack, welding difficulty caused by solving welding narrow space, reduce the workload of welding and polishing, defect detecting test is more convenient, and improves the weldquality of runner, the overhaul life of unit is extended, adds the economic benefit of unit.
Description
Technical field
The utility model is related to hydroelectric facility field more particularly to a kind of midsplit type welding runners.
Background technology
Runner is Francis turbine and the most crucial component of pump turbine, and present runner is made of three parts,
As shown in Figure 1, i.e. crown, blade and lower ring, and crown and lower ring are fixed on up and down the two of blade by welding
End.This structure is primarily present problems with：The junction and blade of crown and blade and the junction of lower ring are all high stresses
Area, and the bonding strength welded is not high, therefore runner is usually cracked on weld seam in operation process, when situation is serious even
Blade can be caused situation about being broken locally occur, seriously affect the safety and economic benefit in power station.
Utility model content
The utility model is in view of the above-mentioned problems, propose a kind of midsplit type welding runner.
The technical solution that the utility model is taken is as follows：
A kind of midsplit type welds runner, including band blade crown and with ring under blade, the band blade crown and with blade
Lower ring is fixed together, and is to be welded and fixed with blade crown and with the fixed form between ring under blade.
Band blade crown and be integrated forging molding product with ring blank under blade, weld seam is not present in itself, can be with
Bear higher stress；The blade profile of each blade is processed on crown and lower ring using numerically-controlled machine tool, processes blade shape
Crown and lower ring only welded together by a weld seam, according to the result of finite element analysis computation, midsplit type welding
It is located at runner low stress area at the solder design of runner, so ensures that the security of runner weld seam, reduces runner and running
Middle weld seam is cracked and the chance being broken occurs in blade.The welding of midsplit type runner is easy to operate, and weld seam is located at low stress area, even
Welding seam intensity is high, and with blade crown and with an only weld seam between ring under blade, solves caused by welding narrow space
Welding difficulty, reduces the workload of welding and polishing, and defect detecting test is more convenient.
Optionally, the number of blade with blade crown be 15 or 17 or 30, the number of blade with ring under blade with
The number of blade with blade crown is consistent.
Optionally, the number of blade with blade crown be 5 or 7 or 9, the number of blade with ring under blade with leaf
The number of blade of piece crown is consistent.
Optionally, the band blade crown blank be stainless steel solid forging, after forging digital control processing go out the blade profile of blade；
Ring blank is stainless steel solid forging under band blade.
Due to using stainless steel solid forging, after forging digital control processing go out the blade profile of blade, band blade crown with blade
Lower ring internal material institutional framework is fine and close, it is not easy to internal flaw occurs, can effectively improve the mechanicalness of midsplit type welding runner
Energy.
Optionally, labeled on the band blade and be provided with screw hole.
Midsplit type welding runner is linked together by bolt and generator shaft.
Optionally, it is provided at the center with blade crown through the tonifying Qi hole with blade crown.
Tonifying Qi hole, in underrun, fills into air, improves the service condition of unit for runner.
The beneficial effects of the utility model are：Band blade crown with ring under blade by stainless steel material solid forging and
Into the blade profile of blade is processed using numerically-controlled machine tool, an only weld seam, and weld seam is arranged on the low stress area of runner therebetween
Domain；Welding difficulty caused by solving welding narrow space reduces the workload of welding and polishing, and defect detecting test is more convenient,
Improve the quality of runner weld seam, reduce midsplit type welding runner operational process in weld seam it is cracked and with blade occur
The risk of local fracture.
Description of the drawings：
Fig. 1 is the attachment structure schematic diagram of runner；
Fig. 2 is the structure diagram of midsplit type welding runner；
Fig. 3 is the sectional view at A-A in Fig. 2；
Fig. 4 is the band blade crown structure diagram of embodiment 1；
Fig. 5 be embodiment 1 band blade under ring structure schematic diagram；
Fig. 6 is the band blade crown structure diagram of embodiment 2；
Fig. 7 be embodiment 2 band blade under ring structure schematic diagram.
Each reference numeral is in figure：1st, crown, 2, blade, 3, lower ring, 4, bolt hole, 12, band blade crown, 23, band leaf
Under piece ring, 5, tonifying Qi hole.
Specific embodiment：
With reference to each attached drawing, the utility model is described in detail.
Embodiment 1：
The present embodiment provides a kind of Francis turbine midsplit types to weld runner
As shown in attached drawing 2, attached drawing 3, attached drawing 4 and attached drawing 5, a kind of midsplit type welds runner, including band blade crown 12 and
Ring 23 under band blade, and be vane foil of the stainless steel solid forging with digital control processing with blade crown 12, with ring 23 under blade
For vane foil of the stainless steel solid forging with digital control processing, 2 part of blade with blade crown 12 with ring under blade 23
2 part of blade is fixed together, and is to be welded and fixed with the fixed form with ring under blade 23 with blade crown 12, on band blade
Screw hole 4 is provided on hat 12, is provided at the center with blade crown 12 on the tonifying Qi hole 5 of entire 2 crown of blade, band blade
Hat and be 30 with the number of blade on ring under blade.
Embodiment 2：
The present embodiment provides a kind of pump turbine midsplit types to weld runner
As shown in attached drawing 2, attached drawing 3, attached drawing 6 and attached drawing 7, a kind of midsplit type welds runner, including band blade crown 12 and
Ring 23 under band blade, and be vane foil of the stainless steel solid forging with digital control processing with blade crown 12, with ring 23 under blade
For vane foil of the stainless steel solid forging with digital control processing, 2 part of blade with blade crown 12 with ring under blade 23
2 part of blade together, and is to be welded and fixed with the fixed form with ring under blade 23 with blade crown 12, band blade crown 12
On be provided with screw hole 4, be provided at the center with blade crown 12 through the tonifying Qi hole 5 of entire 2 crown of blade, band blade crown and
It it is 9 with the number of blade on ring under blade.
The above is only the preferred embodiment of the present invention, not thereby limits the patent protection of the utility model
Scope, every equivalent structure transformation made with the utility model specification and accompanying drawing content, is directly or indirectly used in it
His relevant technical field similarly includes within the protection scope of the present utility model.
Claims (6)
1. a kind of midsplit type welds runner, which is characterized in that including band blade crown and with ring under blade, the band blade crown
It is fixed together with ring under band blade, and is to be welded and fixed with blade crown and with the fixed form between ring under blade.
2. midsplit type as described in claim 1 welds runner, which is characterized in that the number of blade with blade crown is 15
Or 17 or 30, the number of blade with ring under blade is consistent with the number of blade with blade crown.
3. midsplit type as described in claim 1 welds runner, which is characterized in that the number of blade with blade crown is 5
Or 7 or 9, the number of blade with ring under blade is consistent with the number of blade with blade crown.
4. midsplit type as described in claim 1 welds runner, which is characterized in that the band blade crown is integrally forged for stainless steel
Band blade crown is made, ring is stainless steel solid forging band blade crown under the band blade.
5. midsplit type as described in claim 1 welds runner, which is characterized in that is labeled on the band blade and is provided with screw hole.
6. midsplit type as described in claim 1 welds runner, which is characterized in that is provided with and passes through at the center with blade crown
Wear tonifying Qi hole of the whole band with blade crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464994.8U CN207437259U (en) | 2017-11-06 | 2017-11-06 | Midsplit type welds runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464994.8U CN207437259U (en) | 2017-11-06 | 2017-11-06 | Midsplit type welds runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437259U true CN207437259U (en) | 2018-06-01 |
Family
ID=62291081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721464994.8U Ceased CN207437259U (en) | 2017-11-06 | 2017-11-06 | Midsplit type welds runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437259U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023060826A1 (en) * | 2021-10-12 | 2023-04-20 | 东方电气集团东方电机有限公司 | Method for machining high-head water pump turbine blade disc |
-
2017
- 2017-11-06 CN CN201721464994.8U patent/CN207437259U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023060826A1 (en) * | 2021-10-12 | 2023-04-20 | 东方电气集团东方电机有限公司 | Method for machining high-head water pump turbine blade disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20200925 Decision number of declaring invalidation: 46070 Granted publication date: 20180601 |
|
| IW01 | Full invalidation of patent right |