CN202300797U - Hydraulic thrust balanced structure of water turbine - Google Patents
Hydraulic thrust balanced structure of water turbine Download PDFInfo
- Publication number
- CN202300797U CN202300797U CN2011204432082U CN201120443208U CN202300797U CN 202300797 U CN202300797 U CN 202300797U CN 2011204432082 U CN2011204432082 U CN 2011204432082U CN 201120443208 U CN201120443208 U CN 201120443208U CN 202300797 U CN202300797 U CN 202300797U
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- CN
- China
- Prior art keywords
- hydraulic thrust
- runner
- water turbine
- diameter
- 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.)
- Expired - Lifetime
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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
The utility model relates to a thrust balanced structure, and in particular relates to a hydraulic thrust balanced structure of a water turbine. The hydraulic thrust balanced structure of the water turbine aims to overcome the defects in the prior art and provide a hydraulic thrust balanced structure of a water turbine, which is simple in structure and easy to realize. By using the hydraulic thrust balanced structure, a large part of hydraulic thrust can be counteracted by own, the residual hydraulic thrust becomes smaller, and the difficulty of a thrust bearing is reduced greatly. The main scheme of the utility model is as follows: the hydraulic thrust balanced structure of the water turbine comprises a water turbine spindle and a rotary wheel arranged on the spindle, wherein an upper canopy on the rotary wheel and a cover plate form an upper canopy cavity; a lower ring and the rotary wheel form a low-pressure cavity; and the diameter of an upper comb tooth ring on the rotary wheel is greater than or less than the diameter of a lower comb tooth ring on the rotary wheel.
Description
Technical field
The utility model relates to a kind of thrust-balancing structure, relates in particular to a kind of water turbine hydraulic thrust equilibrium structure.
Background technique
The Francis turbine compact structure, efficient is higher, can adapt to very wide head scope, is one of extensive water turbine pattern that adopts in present countries in the world.
At present, the equal diameters of broach ring makes that thrust-bearing is very big under the diameter of the runner upper comb dent ring of conventional water turbine and the runner, makes that the difficulty of design bearing and construction is high, is difficult for realizing.
Summary of the invention
The main purpose of the utility model is to overcome deficiency of the prior art; A kind of simple in structure, water turbine hydraulic thrust equilibrium structure of being beneficial to realization is provided; It makes hydraulic thrust self can offset most, and remaining hydraulic thrust will diminish, and the thrust-bearing difficulty just reduces greatly.
The above-mentioned technical problem of the utility model is able to implement through following technological scheme: a kind of water turbine hydraulic thrust equilibrium structure; Comprise hydraulic turbine main shaft; Be arranged on the runner on the main shaft; Crown on the runner and cover plate form the crown chamber, and following ring and runner form low pressure chamber, and the diameter of runner upper comb dent ring is greater than or less than the diameter of broach ring under the runner.The diameter difference of broach ring under runner upper comb dent ring and the runner makes hydraulic thrust self can offset most, and remaining hydraulic thrust will be very little, and the thrust-bearing difficulty just greatly reduces.
As preferably, the diameter of described runner upper comb dent ring is greater than the diameter of broach ring under the runner.Be beneficial to the counteracting of hydraulic thrust self.
As preferably, the difference of the diameter of broach ring is between 50mm～100mm under the diameter of described runner upper comb dent ring and the runner.
The beneficial effect of the utility model is: utilize the runner diameter difference of broach ring up and down; Make hydraulic thrust self offset most, so, remaining hydraulic thrust will be very little; This designing requirement to thrust-bearing just reduces greatly, and the design that is beneficial to thrust-bearing realizes.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, hydraulic turbine main shaft, 2, runner, 3, crown, 4, cover plate, 5, the crown chamber, 6, ring down, 7, low pressure chamber, 8, runner upper comb dent ring, 9, broach ring under the runner.
Embodiment
Through embodiment,, do further bright specifically below to the technological scheme of the utility model in conjunction with accompanying drawing:
Embodiment 1: as shown in Figure 1, a kind of water turbine hydraulic thrust equilibrium structure comprises hydraulic turbine main shaft 1; Be arranged on the runner 2 on the main shaft; Crown 3 on the runner forms crown chamber 5 with cover plate 4, and following ring 6 forms low pressure chamber 7 with runner, and the diameter of runner upper comb dent ring 8 is greater than the diameter of broach ring 9 under the runner.The diameter of described runner upper comb dent ring is 1280mm, and the diameter of broach ring is 1200mm under the runner.
The utility model is simple in structure, be beneficial to realization, utilizes the runner diameter difference of broach ring up and down, makes hydraulic thrust self offset most, and remaining hydraulic thrust will diminish, and the thrust-bearing difficulty just reduces greatly.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Claims (3)
1. water turbine hydraulic thrust equilibrium structure; Comprise hydraulic turbine main shaft (1); Be arranged on the runner (2) on the main shaft, crown on the runner (3) and cover plate (4) form crown chamber (5), and following ring (6) and runner form low pressure chamber (7); It is characterized in that the diameter of runner upper comb dent ring (8) is greater than or less than the diameter of broach ring (9) under the runner.
2. water turbine hydraulic thrust equilibrium structure according to claim 1 is characterized in that the diameter of described runner upper comb dent ring is greater than the diameter of broach ring under the runner.
3. water turbine hydraulic thrust equilibrium structure according to claim 1 is characterized in that the difference of the diameter of broach ring is between 50mm～100mm under the diameter of described runner upper comb dent ring and the runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204432082U CN202300797U (en) | 2011-11-10 | 2011-11-10 | Hydraulic thrust balanced structure of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204432082U CN202300797U (en) | 2011-11-10 | 2011-11-10 | Hydraulic thrust balanced structure of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300797U true CN202300797U (en) | 2012-07-04 |
Family
ID=46369706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204432082U Expired - Lifetime CN202300797U (en) | 2011-11-10 | 2011-11-10 | Hydraulic thrust balanced structure of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742336A (en) * | 2014-01-04 | 2014-04-23 | 峨眉山市驰骋机械制造有限公司 | Upper canopy balance adjustment ring slot structure of double rotation wheel water turbine |
| CN108223242A (en) * | 2017-12-05 | 2018-06-29 | 中海石油气电集团有限责任公司 | A kind of axial force balance mechanism and computational methods of FLNG hydraulic turbines |
| CN113586312A (en) * | 2021-09-07 | 2021-11-02 | 中国水利水电科学研究院 | Top cover inner cavity design method for reducing vertical vibration hazard of top cover of water turbine |
-
2011
- 2011-11-10 CN CN2011204432082U patent/CN202300797U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742336A (en) * | 2014-01-04 | 2014-04-23 | 峨眉山市驰骋机械制造有限公司 | Upper canopy balance adjustment ring slot structure of double rotation wheel water turbine |
| CN103742336B (en) * | 2014-01-04 | 2016-06-08 | 峨眉山市驰骋机械制造有限公司 | The crown balance adjustment groove structure of double-rotary-wheel water turbine |
| CN108223242A (en) * | 2017-12-05 | 2018-06-29 | 中海石油气电集团有限责任公司 | A kind of axial force balance mechanism and computational methods of FLNG hydraulic turbines |
| CN108223242B (en) * | 2017-12-05 | 2019-12-13 | 中海石油气电集团有限责任公司 | Axial force balance mechanism of FLNG hydraulic turbine and calculation method |
| CN113586312A (en) * | 2021-09-07 | 2021-11-02 | 中国水利水电科学研究院 | Top cover inner cavity design method for reducing vertical vibration hazard of top cover of water turbine |
| CN113586312B (en) * | 2021-09-07 | 2022-10-04 | 中国水利水电科学研究院 | Top cover inner cavity design method for reducing vertical vibration hazard of top cover of water turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |