CN212272425U - High-efficient hydraulic turbine double-movable guide vane device - Google Patents
High-efficient hydraulic turbine double-movable guide vane device Download PDFInfo
- Publication number
- CN212272425U CN212272425U CN202021949532.7U CN202021949532U CN212272425U CN 212272425 U CN212272425 U CN 212272425U CN 202021949532 U CN202021949532 U CN 202021949532U CN 212272425 U CN212272425 U CN 212272425U
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- Prior art keywords
- guide vane
- stator
- tail end
- flexible section
- movable guide
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- 238000005096 rolling process Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 5
- 230000002349 favourable effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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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 relates to a hydraulic turbine technical field discloses a high-efficient hydraulic turbine double-movable stator device, including stator front end, stator tail end and flexible section, be connected with flexible section between stator front end and the stator tail end. The utility model discloses can realize improving the inside flow stability purpose of hydraulic turbine, make stator tail end and stator front end flexonics, reduce the emergence probability of blade path whirlpool, be favorable to unit safety and stability's operation.
Description
Technical Field
The utility model relates to a hydraulic turbine technical field specifically indicates a high-efficient hydraulic turbine double movable guide vane device.
Background
The hydraulic turbine is a power machine for converting the energy of water flow into rotary mechanical energy, and belongs to the turbine machinery in fluid machinery. Most of the water turbines are installed in hydropower stations and are used for driving generators to generate electricity. In a hydropower station, water in an upstream reservoir is guided to a water turbine through a water guide pipe to push a water turbine runner to rotate so as to drive a generator to generate electricity. The water after doing work is discharged to the downstream through the tail water pipeline. The higher the water head and the larger the flow, the larger the output power of the water turbine is.
The movable guide vane is a key flow passage component in the water turbine and has obvious influence on the efficiency of the water turbine, pressure pulsation and other hydraulic stability. However, because the structure of the traditional movable guide vane is fixed, when the francis turbine is not operated under the optimal working condition, the streaming condition of the guide vane is not ideal enough, defluidization, backflow and cavitation are formed on the surface of the guide vane, wake flow is formed at the tail part of the guide vane, a blade vortex is generated and pressure pulsation is caused, so that the blade is cracked, and in addition, the blade vortex can also induce vortex cavitation, so that cavitation is caused, noise is caused, the blade is damaged, and the safe and stable operation of the turbine set is influenced.
Therefore, a double movable guide vane device capable of improving the internal flow stability of the water turbine is urgently needed.
SUMMERY OF THE UTILITY MODEL
Based on above problem, the utility model provides a high-efficient hydraulic turbine double movable guide vane device. The utility model discloses can realize improving the inside flow stability purpose of hydraulic turbine, make stator tail end and stator front end flexonics, reduce the emergence probability of blade path whirlpool, be favorable to unit safety and stability's operation.
For solving the above technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a two movable stator devices of high-efficient hydraulic turbine, includes stator front end, stator tail end and flexible section, be connected with flexible section between stator front end and the stator tail end.
The utility model discloses in, double movable guide vane is by the stator front end, stator tail end and flexible section are constituteed, when the double movable guide vane of this application receives water pressure, water flow can form the low-pressure area in one side of stator front end, the opposite side forms the high-pressure area, also can form backward flow district and wake zone at the stator tail end simultaneously, because stator front end and stator tail end have been connected to the flexible section again, under the effect of pressure difference in both sides, flexible section and tail end can deflect to the negative-pressure area, finally it is balanced under the effect of both sides pressure, the descum and backward flow phenomenon is by effectual elimination this moment, the flow state of rivers has been optimized, and then reduce the production of the blade vortex, realize improving hydraulic turbine internal flow stability's purpose. The utility model discloses can realize improving the inside flow stability purpose of hydraulic turbine, make the stator tail end can take place to rotate for the stator front end, reduce the emergence probability of blade path whirlpool, be favorable to unit safety and stability's operation.
As a preferred mode, a horizontal rolling groove is formed in the tail end of the guide vane, and a sliding ball body is arranged in the horizontal rolling groove.
As a preferred mode, a transmission channel communicated with the horizontal rolling groove is arranged at the tail end of the guide vane, and a sealing cover is arranged at the channel opening of the transmission channel.
As a preferable mode, a step is provided in the passage opening of the transfer passage, and the sealing cover is placed on the step.
As a preferable mode, a guide vane shaft is provided at the front end of the guide vane.
Preferably, the flexible section is a rubber flexible section.
As a preferred mode, cold glue is arranged between the front end of the guide vane and the flexible section, and between the tail end of the guide vane and the flexible section.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model can realize the purpose of improving the internal flow stability of the water turbine, flexibly connect the tail end of the guide vane with the front end of the guide vane, reduce the generation probability of the blade vortex, and be beneficial to the safe and stable operation of the unit;
(2) the utility model is beneficial to promoting the tail end of the guide vane to adjust the deflection direction according to the water flow pressure at both sides through the horizontal rolling groove in the tail end of the guide vane and the sliding ball body in the horizontal rolling groove;
(3) the utility model has the advantages that the transmission channel is communicated with the horizontal rolling groove, the sealing cover is arranged at the channel port of the transmission channel, the transmission channel realizes the transmission of the sliding ball body into the horizontal rolling groove, and the sliding ball body rolls in the horizontal rolling groove due to the stress condition of the tail end of the guide vane, so that the sealing cover in the transmission channel can not be impacted, and the rolling of the sliding ball body in the horizontal rolling groove is facilitated;
drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a cross-sectional view of fig. 2A-a.
Fig. 4 is a flow pattern diagram of a conventional movable vane.
The guide vane comprises a guide vane front end 1, a guide vane shaft 2, a flexible section 3, a guide vane tail end 4, a sealing cover 5, a step 6, a transmission channel 7, a horizontal rolling groove 8 and a sliding ball 9.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.
Example 1:
referring to fig. 1 and 4, a high-efficient hydraulic turbine double-movable guide vane device includes guide vane front end 1, guide vane tail end 4 and flexible section 3, is connected with flexible section 3 between guide vane front end 1 and the guide vane tail end 4.
The utility model discloses in, double movable guide vane is by stator front end 1, stator tail end 4 and flexible section 3 are constituteed, when the double movable guide vane of this application receives water pressure, water flow can form the low-pressure area in one side of stator front end 1, the opposite side forms the high nip, simultaneously also can form backward flow district and wake zone at stator tail end 4, because stator front end 1 and stator tail end 4 have been connected to flexible section 3 again, under pressure difference's effect in both sides, flexible section 3 and tail end can deflect to the wake zone, finally balance under the effect of both sides pressure, the deslugging and backward flow phenomenon are by effectual elimination this moment, the flow state of rivers has been optimized, and then reduce the blade vortex production, realize improving hydraulic turbine internal flow stability's purpose. The utility model discloses can realize improving the inside flow stability purpose of hydraulic turbine, make stator tail end 4 can take place to rotate for stator front end 1, reduce the emergence probability of blade way whirlpool, be favorable to unit safety and stability's operation.
The guide vane front end 1, the flexible section 3 and the guide vane rear end are in smooth transition, and the guide vane front end 1 and the flexible section 3 and the guide vane rear end and the flexible section 3 can be connected mechanically or by glue. The mechanical connection is a connection such as a screw, a bolt, etc.
Referring to fig. 2 to 3, as a preferred mode, a horizontal rolling groove 8 is formed in the tail end 4 of the guide vane, and a sliding ball 9 is arranged in the horizontal rolling groove 8.
Through the horizontal rolling groove 8 in the guide vane tail end 4 and the sliding ball 9 in the horizontal rolling groove 8, the guide vane tail end 4 is facilitated to adjust the deflection direction according to the water flow pressure on two sides. The deflection of the tail end 4 of the guide vane is promoted because the sliding ball 9 rolls in the horizontal rolling groove 8, so the horizontal rolling grooves 8 are symmetrically distributed in the tail end 4 of the guide vane and control the deflection of the double movable guide vanes.
Referring to fig. 2 to 3, as a preferred mode, a transmission channel 7 communicated with a horizontal rolling groove 8 is arranged on the tail end 4 of the guide vane, and a sealing cover 5 is arranged at a channel opening of the transmission channel 7.
Through the transmission channel 7 that communicates with horizontal rolling groove 8, the access department of transmission channel 7 is equipped with sealed lid 5, and transmission channel 7 realizes transmitting the sliding ball 9 to horizontal rolling groove 8 in, because the atress condition of stator tail end 4, sliding ball 9 rolls in horizontal rolling groove 8, can not assault sealed lid 5 in the transmission channel 7, is favorable to rolling the rolling of spheroid in horizontal rolling groove 8.
Referring to fig. 2 to 3, as a preferable mode, a step 6 is provided in a passage opening of the transfer passage 7, and the sealing cover 5 is placed on the step 6.
The end face of the sealing cover 5 and the end face of the guide vane tail end 4 are in the same plane, and the connecting mode of the sealing cover 5 and the channel opening of the transmission channel 7 can be any fixing mode such as threaded connection and screw connection.
Referring to fig. 1-2, a guide vane shaft 2 is disposed at a front end 1 of the guide vane as a preferred mode.
The guide vane shaft 2 is used for being connected with a guide vane adjusting device on the water turbine.
Referring to fig. 1-2, the flexible section 3 is preferably a rubber flexible section 3.
The flexible section 3 is an elastic flexible section 3, and rubber has elasticity, so the flexible section 3 is the rubber flexible section 3, which is favorable for the deflection of the double movable guide vanes when the double movable guide vanes receive pressure from two sides.
As a preferred mode, cold glue is arranged between the front end 1 of the guide vane and the flexible section 3, and between the tail end 4 of the guide vane and the flexible section 3.
The cold glue facilitates the connection of the guide vane front end 1, the flexible section 3 and the guide vane tail end 4 together.
The embodiment of the present invention is the above. The above embodiments and the specific parameters in the embodiments are only for the purpose of clearly showing the verification process of the utility model, and are not used to limit the patent protection scope of the utility model, the patent protection scope of the utility model is still subject to the claims, all the equivalent structural changes made by using the contents of the specification and the drawings of the utility model are included in the protection scope of the utility model.
Claims (7)
1. The utility model provides a two movable guide vane devices of high-efficient hydraulic turbine which characterized in that: including stator front end (1), stator tail end (4) and flexible section (3), be connected with flexible section (3) between stator front end (1) and stator tail end (4).
2. A high efficiency water turbine double movable guide vane device according to claim 1, characterized in that: a horizontal rolling groove (8) is formed in the guide vane tail end (4), and a sliding ball body (9) is arranged in the horizontal rolling groove (8).
3. A high efficiency water turbine double movable guide vane device according to claim 2, characterized in that: the guide vane is characterized in that a transmission channel (7) communicated with the horizontal rolling groove (8) is arranged on the guide vane tail end (4), and a sealing cover (5) is arranged at a channel opening of the transmission channel (7).
4. A high efficiency water turbine double movable guide vane device according to claim 3, characterized in that: a step (6) is arranged in a channel opening of the transmission channel (7), and the sealing cover (5) is placed on the step (6).
5. A high efficiency water turbine double movable guide vane device according to claim 1, characterized in that: the guide vane front end (1) is provided with a guide vane shaft (2).
6. A high efficiency water turbine double movable guide vane device according to claim 1, characterized in that: the flexible section (3) is a rubber flexible section (3).
7. A high efficiency water turbine double movable guide vane device according to claim 1, characterized in that: and cold-bonding glue is arranged between the front end (1) of the guide vane and the flexible section (3) and between the tail end (4) of the guide vane and the flexible section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021949532.7U CN212272425U (en) | 2020-09-08 | 2020-09-08 | High-efficient hydraulic turbine double-movable guide vane device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021949532.7U CN212272425U (en) | 2020-09-08 | 2020-09-08 | High-efficient hydraulic turbine double-movable guide vane device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212272425U true CN212272425U (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021949532.7U Expired - Fee Related CN212272425U (en) | 2020-09-08 | 2020-09-08 | High-efficient hydraulic turbine double-movable guide vane device |
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| CN (1) | CN212272425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980841A (en) * | 2020-09-08 | 2020-11-24 | 西华大学 | High-efficient hydraulic turbine double-movable guide vane device |
-
2020
- 2020-09-08 CN CN202021949532.7U patent/CN212272425U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980841A (en) * | 2020-09-08 | 2020-11-24 | 西华大学 | High-efficient hydraulic turbine double-movable guide vane device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210101 |