CN210087527U - Hydraulic turbine runner with auxiliary blades on crown - Google Patents
Hydraulic turbine runner with auxiliary blades on crown Download PDFInfo
- Publication number
- CN210087527U CN210087527U CN201920801490.3U CN201920801490U CN210087527U CN 210087527 U CN210087527 U CN 210087527U CN 201920801490 U CN201920801490 U CN 201920801490U CN 210087527 U CN210087527 U CN 210087527U
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- China
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- upper crown
- crown
- horn body
- turbine runner
- blades
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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
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- Hydraulic Turbines (AREA)
Abstract
The utility model provides a water turbine runner with an auxiliary blade on the upper crown, which comprises an upper crown, wherein the upper crown is fixedly connected with a plurality of main blades, one end of each main blade is connected with the bottom of the upper crown, the other end of each main blade is connected with the inner surface of a lower ring, and the lower ring is in a ring shape; the upper crown comprises an upper crown horn body, the outer side surface of the upper crown horn body is connected with one end of the main blade, a rotary sealing ring is fixed at the top of the outer edge of the upper crown horn body, and an annular sealing groove is formed in the top of the rotary sealing ring; the upper crown horn body is fixedly connected with a shaft hole section, the shaft center of the upper crown horn body is provided with an opening, the opening is coaxially and fixedly connected with one end of the shaft hole section, and the inner wall of the cylinder of the shaft hole section is provided with a key groove along the axis direction; a plurality of auxiliary blades are uniformly fixed on the inner surface of the upper crown horn body. The utility model discloses an accessory blade has balanced hydraulic turbine axial water thrust and has alleviateed the abrasion of hydraulic turbine crown, has improved hydraulic turbine runner maintenance cycle and life.
Description
Technical Field
The utility model belongs to the technical field of hydraulic machinery, a hydraulic turbine runner that crown has auxiliary blade is related to.
Background
The water energy resource is used as renewable energy, is the most mature technically and economically reasonable clean energy, is one of important components in the energy structure of China, is rich in water power resource of China, and has the development capacity of more than 6.08 trillion kw.h. In China, severe adverse effects are brought to the operation of a water turbine by abrasion, the main factor of most hydropower stations determining the overhaul period of a unit is the severity of abrasion damage of the water turbine, great economic loss is caused to a power station due to overhaul shutdown, repair welding or impeller replacement and the like, and the abrasion can also induce strong vibration and noise of the unit. The axial hydraulic thrust of the water turbine has great influence on the safe operation and stability of the unit. In the production process of a hydropower station, the situations of thrust tile surface abrasion, tile burning accidents, limited load operation and the like caused by overlarge axial water thrust when a large number of units run occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic turbine runner that the crown has auxiliary blade can prolong maintenance cycle, increases the life of hydraulic turbine runner.
The technical proposal adopted by the utility model is that,
a hydraulic turbine runner with an auxiliary blade on a crown comprises the crown, wherein the crown is fixedly connected with a plurality of main blades, one end of each main blade is connected to the bottom of the crown, the other end of each main blade is connected to the inner surface of a lower ring, and the lower ring is annular;
the upper crown comprises an upper crown horn body, wherein the outer side surface of the upper crown horn body is connected with one end of the main blade, a rotary sealing ring is fixed at the top of the outer edge of the upper crown horn body, and an annular sealing groove is formed in the top of the rotary sealing ring; a shaft hole section is fixedly connected in the upper crown horn body, an opening is formed in the axis of the upper crown horn body, the opening is coaxially and fixedly connected with one end of the shaft hole section, and a key groove is formed in the inner wall of the shaft hole section along the axis direction;
wherein, a plurality of auxiliary blades are uniformly fixed on the inner surface of the upper crown trumpet body.
The utility model is also characterized in that,
wherein each secondary blade is in a curve shape, and the bending direction of each secondary blade is the same as the rotating direction of the turbine runner.
Wherein the distance between each auxiliary blade and the inner wall of the rotary sealing ring is 10-15 mm.
Wherein the number of the auxiliary blades is 6-8.
Wherein the upper crown horn body and the rotary sealing ring are fixed through screws.
The beneficial effects of the utility model are that, the vice blade has balanced hydraulic turbine axial water thrust and has alleviateed the abrasion of hydraulic turbine crown, has improved the maintenance cycle and the life of hydraulic turbine runner.
Drawings
Fig. 1 is a main sectional view of a turbine runner with an auxiliary blade on the crown according to the present invention;
fig. 2 is a perspective view of a turbine runner with an auxiliary blade on the crown according to the present invention.
In the figure, 1 is an upper crown, 1-1 is a sealing groove, 1-2 is a key groove, 1-3 is a rotary sealing ring, 1-4 is an upper crown horn body, 1-5 is an axial hole section, 2 is a main blade, 3 is a lower ring, and 4 is an auxiliary blade.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
A turbine runner with an auxiliary blade on a crown is shown in figure 1 and figure 2 and comprises the crown, the crown is fixedly connected with a plurality of main blades, one end of each main blade is connected to the bottom of the crown, the other end of each main blade 2 is connected to the inner surface of a lower ring 3, and the lower ring 3 is annular;
the upper crown 1 comprises an upper crown horn body 1-4, wherein the outer side surface of the upper crown horn body 1-4 is connected with one end of the main blade 2, a rotary sealing ring 1-3 is fixed at the top of the outer edge of the upper crown horn body 1-4, the upper crown horn body 1-4 and the rotary sealing ring 1-3 are fixed through screws, and an annular sealing groove 1-1 is formed in the top of the rotary sealing ring 1-3; a shaft hole section 1-5 is fixedly connected in the upper crown trumpet body 1-4, the shaft center of the upper crown trumpet body 1-4 is provided with an opening which is coaxially and fixedly connected with one end of the shaft hole section 1-5, wherein the inner wall of the shaft hole section 1-5 is provided with a key groove 1-2 along the axial direction,
wherein 6-8 auxiliary blades 4 are uniformly fixed on the inner surface of the upper crown horn body, each auxiliary blade 4 is in a curve shape, the bending direction of each auxiliary blade 4 is the same as the rotating direction of a water turbine runner, and the distance between each auxiliary blade 4 and the inner wall of a rotary sealing ring 1-3 is 10-15 mm.
The principle of the utility model is that, the shape of auxiliary blade 4 is the curvilinear figure, and every auxiliary blade 4's crooked direction is the same with the direction of rotation of hydraulic turbine runner, and when the hydraulic turbine runner rotated, auxiliary blade 4 had played the effect of guide rivers direction, has reduced hydraulic turbine axial water thrust under the condition of not destroying the inside law that flows of the hydraulic turbine, and then has avoided influencing the external characteristics of whole hydraulic turbine.
When the utility model is used, the shaft hole section 1-5 and the key groove 1-2 are matched with the main shaft of the water turbine, are arranged on the water turbine and are matched with the matched front cover plate for use.
The utility model discloses a setting up of auxiliary blade has balanced hydraulic turbine axial water thrust and alleviateed the abrasion of hydraulic turbine crown, has improved hydraulic turbine runner maintenance cycle and life.
Claims (5)
1. The water turbine runner with the auxiliary blades on the upper crown is characterized by comprising the upper crown (1), wherein the upper crown (1) is fixedly connected with a plurality of main blades (2), one end of each main blade (2) is connected to the bottom of the upper crown, the other end of each main blade (2) is connected to the inner surface of a lower ring (3), and the lower ring (3) is annular;
the upper crown (1) comprises an upper crown horn body (1-4), the outer side surface of the upper crown horn body (1-4) is connected with one end of the main blade (2), a rotary sealing ring (1-3) is fixed at the top of the outer edge of the upper crown horn body (1-4), and an annular sealing groove (1-1) is formed at the top of the rotary sealing ring (1-3); a shaft hole section (1-5) is fixedly connected in the upper crown horn body (1-4), an opening is formed in the axis of the upper crown horn body (1-4), the opening is coaxially and fixedly connected with one end of the shaft hole section (1-5), and a key groove (1-2) is formed in the inner wall of the shaft hole section (1-5) along the axis direction;
a plurality of auxiliary blades (4) are uniformly fixed on the inner surface of the upper crown horn body.
2. A turbine runner shrouded with secondary blades according to claim 1 wherein each of the secondary blades (4) is curved and the direction of curvature of each of the secondary blades (4) is the same as the direction of rotation of the turbine runner.
3. A turbine runner with secondary blades on the crown according to claim 1, characterized in that each secondary blade (4) is located at a distance of 10-15 mm from the inner wall of the rotating seal ring (1-3).
4. A turbine runner with secondary blades shrouded according to claim 1 wherein the number of secondary blades (4) is 6-8.
5. A turbine runner with secondary blades on the crown according to claim 1, characterised in that the crown horns (1-4) are screwed to the rotary sealing rings (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920801490.3U CN210087527U (en) | 2019-05-30 | 2019-05-30 | Hydraulic turbine runner with auxiliary blades on crown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920801490.3U CN210087527U (en) | 2019-05-30 | 2019-05-30 | Hydraulic turbine runner with auxiliary blades on crown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087527U true CN210087527U (en) | 2020-02-18 |
Family
ID=69480888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920801490.3U Active CN210087527U (en) | 2019-05-30 | 2019-05-30 | Hydraulic turbine runner with auxiliary blades on crown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087527U (en) |
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2019
- 2019-05-30 CN CN201920801490.3U patent/CN210087527U/en active Active
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