CN211623599U - Bidirectional through-flow turbine - Google Patents
Bidirectional through-flow turbine Download PDFInfo
- Publication number
- CN211623599U CN211623599U CN202020131395.XU CN202020131395U CN211623599U CN 211623599 U CN211623599 U CN 211623599U CN 202020131395 U CN202020131395 U CN 202020131395U CN 211623599 U CN211623599 U CN 211623599U
- Authority
- CN
- China
- Prior art keywords
- section
- draft tube
- runner
- hub body
- water inlet
- 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 - Fee Related
Links
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000009792 diffusion process Methods 0.000 claims abstract description 10
- 230000001939 inductive effect Effects 0.000 claims 2
- 238000005452 bending Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a bidirectional through-flow turbine, which comprises a water inlet flow passage, wherein one end of the water inlet flow passage is tightly attached to the water inlet flow passage and is sequentially communicated with a guide vane section, a runner chamber, a tail water pipe diffusion section and a tail water pipe extension section; a hub body is also distributed along the direction of the central shaft of the water inlet flow passage, and the other end of the hub body extends to the tail water pipe diffusion section; the hub body is fixed in the water inlet flow channel through the buttress, the outer surface of the hub body is also respectively fixed with a circle of guide vanes and a circle of runner blades capable of rotating along the outer surface of the hub body, the tail ends of the guide vanes are close to the inner wall of the guide vane section, and the tail ends of the runner blades are close to the inner wall of the runner chamber; and a drainage blade is also fixed on the inner wall of the extension section of the draft tube. Through setting up the drainage blade at draft tube extension section, change the flow direction of rivers under the reverse operating mode, make rivers can clockwise rotation when getting into the runner, improved the circulation volume of rivers, simultaneously, also reduce the impact force of rivers to the runner, reduce the noise and the vibration of the hydraulic turbine, improved runner blade's fatigue life.
Description
Technical Field
The utility model belongs to the technical field of fluid machinery equipment, a two-way through-flow turbine is related to.
Background
The through-flow turbine has the advantages of low water head, large overflow, high efficiency, large specific speed, small hydraulic loss and the like, various countries pursue the utilization of tidal energy at present, and a plurality of experts and scholars pay more and more attention to the tidal power generation technology. For a bidirectional through-flow turbine, due to the lack of a rear guide vane, incoming flow from the ocean direction directly impacts a runner blade, and meanwhile, due to the periodic swing of the ocean, the generated wave flow effect generates periodic impact on the back surface of the runner blade, so that the service life of the runner blade is greatly reduced, and due to the influence of gravity, the pressure on the runner blade is periodically changed, and further the blade is periodically damaged. In addition, under the reverse working condition, because the water flow enters the rotating wheel without circulation, the utilization rate of the water flow by the rotating wheel is low, and the efficiency of the water turbine is also obviously reduced. Based on the above factors, the stability, safety, reliability and high efficiency of the through-flow turbine under the reverse operation condition are all considered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two-way through-flow turbine has solved among the prior art under the reverse operating mode not have the ring volume and runner blade receive the impact problem to the efficiency and the operating stability of the hydraulic turbine have been improved.
The technical scheme adopted by the utility model is that the bidirectional through-flow turbine comprises a water inlet flow passage, wherein one end close to the water inlet flow passage is sequentially communicated with a guide vane section, a runner chamber, a tail water pipe diffusion section and a tail water pipe extension section; a hub body is also distributed along the direction of a central shaft of the water inlet flow passage, and the other end of the hub body extends to the tail water pipe diffusion section; the hub body is fixed in the water inlet flow channel through the buttress, the outer surface of the hub body is also respectively fixed with a circle of guide vanes and a circle of runner blades capable of rotating along the hub body, the tail ends of the guide vanes are close to the inner wall of the guide vane section, and the tail ends of the runner blades are close to the inner wall of the runner chamber; and a drainage blade along the central shaft direction of the extension section of the draft tube is also fixed on the inner wall of the extension section of the draft tube.
The utility model is also characterized in that,
the total number of the drainage blades is 4, and the drainage blades are uniformly distributed along the inner wall of the extension section of the draft tube.
The drainage blade is a thin sheet consisting of a straight line section and a bent section, the side tangent plane of the straight line section of the drainage blade is tightly attached to the inner wall of the extension section of the draft tube, the straight line section is parallel to the central shaft of the water turbine, the outlet angle of the bent section is 35 degrees, and the bent section is arranged towards the direction of the central shaft.
The length of the straight line section is 1/10 of the extension section of the draft tube, the length of the bending section in the axial direction is twice of the length of the straight line section, the thickness of the drainage blade is 1/4 of the length of the straight line section, and the length of the drainage blade is 1/4 of the cross section height of the extension section of the draft tube.
The distance from the head of the guide vane to the outlet of the draft tube extension is 1/3 of the draft tube extension.
The draft tube diffuser section is a horn shape with a large caliber at one end and a small caliber at the other end, wherein the end with the large caliber is connected with the draft tube extension section, and the end with the small caliber is connected with the draft tube diffuser section.
The external surface of the hub body is smooth, the cross section is circular, each runner blade encloses into an annular rotator, and the annular rotator is nested on the hub body with smooth external surface.
The beneficial effects of the utility model are that, through setting up the drainage blade at draft tube extension section, change the flow direction of rivers under the reverse operating mode, make rivers can clockwise rotation when getting into the runner, improved the circulation volume of rivers, simultaneously, also can reduce rivers to the impact force of runner, reduce the noise and the vibration of the hydraulic turbine, improved runner blade's fatigue life to improve the efficiency of the hydraulic turbine, maintain unit safety and stability's operation.
Drawings
Fig. 1 is a schematic structural view of a bidirectional through-flow turbine according to the present invention;
FIG. 2 is a schematic plan view of a bidirectional cross-flow turbine guide vane of the present invention;
FIG. 3 is a schematic cross-sectional view of a draft tube extension of a bi-directional tubular turbine according to the present invention;
fig. 4 is a three-dimensional schematic view of the flow-guiding blade of the bidirectional through-flow turbine of the present invention.
In the figure, 1, a water inlet flow passage, 2, buttresses, 3, guide vanes, 4, runner blades, 5, a runner chamber, 6, a tail water pipe diffusion section, 7, a tail water pipe extension section, 8, a drainage blade, 9, a hub body and 10, a guide vane section.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a bidirectional through-flow turbine, as shown in figure 1, which comprises a water inlet flow passage 1, wherein one end close to the water inlet flow passage 1 is sequentially communicated with a guide vane section 10, a runner chamber 5, a tail water pipe diffusion section 6 and a tail water pipe extension section 7; a hub body 9 is also distributed along the central shaft direction of the water inlet flow passage 1, and the other end of the hub body 9 extends to the tail water pipe diffusion section 6; the hub body 9 is fixed in the water inlet flow passage 1 through the buttress 2, the outer surface of the hub body 9 is also fixed with a circle of guide vanes 3 and a circle of runner blades 4 capable of rotating along the circumferential direction of the hub body 9 respectively, the tail ends of the guide vanes 3 are close to the inner wall of the guide vane section 10, and the tail ends of the runner blades 4 are close to the inner wall of the runner chamber 5; and a drainage blade 8 along the central shaft direction of the draft tube extension section 7 is also fixed on the inner wall of the draft tube extension section 7.
The guide vane 3 is a fully opened guide vane and is fixed on the hub body 9.
The external surface of the hub body 9 is smooth, the cross section is circular, each runner blade 4 encloses into a ring-shaped rotator, the ring-shaped rotator is nested on the hub body 9 with smooth external surface, when water flow impacts, the runner blade 4 starts to rotate to do work.
The total number of the drainage blades 8 is 4, and the drainage blades are uniformly distributed along the inner wall of the extension section 7 of the draft tube.
As shown in fig. 2 and 3, the flow guide blade 8 is a thin sheet composed of a straight line segment and a bent segment, the side tangent plane of the straight line segment of the flow guide blade 8 is tightly attached to the inner wall of the draft tube extension segment 7, the straight line segment is parallel to the central shaft of the water turbine, the outlet angle of the bent segment is 35 degrees, and the bent segment is arranged towards the direction of the central shaft.
The length of the straight line section is 1/10 of the extension section of the draft tube, the length of the bending section in the axial direction is 2 times of the length of the straight line section, the thickness of the guide vane 8 is 1/4 of the length of the straight line section, and the length of the guide vane 8 is 1/4 of the height of the cross section of the extension section 7 of the draft tube.
As shown in fig. 4, the distance from the head of the guide vane 8 to the outlet of the draft tube extension 7 is 1/3 of the draft tube extension 7. One end of the drainage blade is fixed on the inner wall of the extension section of the draft tube, and the other end of the drainage blade is not fixed and is in contact with water flow.
The draft tube diffuser 6 is horn-shaped with a large caliber at one end and a small caliber at the other end, wherein the end with the large caliber is connected with the draft tube extension section 7, and the end with the small caliber is connected with the draft tube diffuser 6.
The utility model discloses a two-way through-flow turbine's working process as follows:
when two-way through-flow turbine worked under reverse operating mode, originally, did not have rotatory rivers to form certain rotation when the drainage blade 8 in draft tube extension 7, the direction of rotation is clockwise, rivers this moment have certain spiral volume, afterwards, rotatory rivers promote runner blade 4 and make its acting, because the rivers have had the rotation, the annular volume of rivers increases thereupon, the acting capacity to the runner has been improved, thereby improve the efficiency of the hydraulic turbine, flow out behind rivers acting through opening the stator 3 entirely and intake runner 1. The existence of the drainage blade 8 not only enables water flow to form more annular quantity for applying work to the runner blade 4, but also changes the attack angle of the water flow to the runner blade 4, greatly reduces the impact force on the runner blade 4 and improves the fatigue life of the runner blade 4. When the water flow generator works under the forward working condition, water flow firstly passes through the water inlet flow channel 1 and then passes through the guide vane 3 in the guide vane section 10, on one hand, the guide vane 3 is used for changing the circulation volume of the water flow, on the other hand, the flow is adjusted, then, the runner blades 4 in the runner chamber 5 are pushed to rotate, the runner blades 4 are applied with work, and finally, the water flow is discharged through the tail water pipe diffusion section 6 and the tail water pipe extension section 7.
Claims (7)
1. A bidirectional through-flow turbine is characterized by comprising a water inlet flow channel (1), wherein one end close to the water inlet flow channel (1) is sequentially communicated with a guide vane section (10), a runner chamber (5), a draft tube diffusion section (6) and a draft tube extension section (7); a hub body (9) is also distributed along the central shaft direction of the water inlet flow channel (1), and the other end of the hub body (9) extends to the draft tube diffusion section (6); the hub body (9) is fixed in the water inlet flow channel (1) through the buttress (2), the outer surface of the hub body (9) is further provided with a guide vane (3) and a circle of runner blades (4) capable of rotating along the circumferential direction of the hub body (9), the tail end of the guide vane (3) is close to the inner wall of the guide vane section (10), and the tail end of the runner blade (4) is close to the inner wall of the runner chamber (5); and a drainage blade (8) along the central shaft direction of the draft tube extension section (7) is further fixed on the inner wall of the draft tube extension section (7).
2. A bi-directional flow turbine according to claim 1, characterized in that the guide vanes (8) are 4 in total and evenly distributed along the inner wall of the draft tube extension (7).
3. A bi-directional flow turbine as claimed in claim 2, wherein the flow inducing vane (8) is a thin sheet composed of a straight section and a curved section, the side section of the straight section of the flow inducing vane (8) is closely attached to the inner wall of the draft tube extension section (7), the straight section is arranged parallel to the central axis of the turbine, the exit angle of the curved section is 35 °, and the curved section is arranged towards the central axis.
4. A bi-directional flow turbine as claimed in claim 3 wherein the straight section is 1/10 times the length of the draft tube extension, the curved section is 2 times the length of the straight section in the axial direction, the thickness of the guide vanes (8) is 1/4 times the length of the straight section, and the length of the guide vanes (8) is 1/4 times the cross-sectional height of the draft tube extension (7) at that point.
5. A bi-directional flow turbine according to claim 1, characterized in that the distance from the head of the guide vane (8) to the outlet of the draft tube extension (7) is 1/3 of the draft tube extension (7).
6. A bi-directional flow turbine according to claim 1, characterized in that the draft tube diverging section (6) is of a trumpet type having a large diameter at one end and a small diameter at the other end, wherein the large diameter end is connected to the draft tube extending section (7) and the small diameter end is connected to the draft tube diverging section (6).
7. A bi-directional flow turbine according to claim 1, characterized in that the hub (9) has a smooth outer surface and a circular cross-section, and each runner blade (4) is enclosed as an annular rotator nested in the hub (9) having a smooth outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131395.XU CN211623599U (en) | 2020-01-20 | 2020-01-20 | Bidirectional through-flow turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131395.XU CN211623599U (en) | 2020-01-20 | 2020-01-20 | Bidirectional through-flow turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211623599U true CN211623599U (en) | 2020-10-02 |
Family
ID=72618101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020131395.XU Expired - Fee Related CN211623599U (en) | 2020-01-20 | 2020-01-20 | Bidirectional through-flow turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211623599U (en) |
-
2020
- 2020-01-20 CN CN202020131395.XU patent/CN211623599U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1828042B (en) | Runner of opposite-rotating through flow turbine capable of bidirectionally generating electricity | |
| WO2019061841A1 (en) | Multi-stage tidal current energy water turbine based on real-time adjustable guide cover rotation angle | |
| CN107237718A (en) | A kind of multi-stage impeller tumbler for absorbing tide energy | |
| CN111878282A (en) | Tidal current double-rotating-wheel combined water turbine | |
| CN207647673U (en) | A kind of tubular turbine | |
| CN109441691B (en) | Mixed-flow water turbine with tail water pipe and rectifying plate | |
| CN111594369A (en) | Mixed-flow water turbine with double-inlet volute suitable for cooling tower | |
| CN210769122U (en) | Multi-stage hydroelectric power generation device | |
| CN213981024U (en) | Tubular turbine for improving draft tube pressure pulsation | |
| CN110318928A (en) | A kind of turbo-hydroturbine | |
| CN211623599U (en) | Bidirectional through-flow turbine | |
| CN111535974A (en) | Low-water-head large-flow mixed-flow water turbine with double-inlet volute | |
| CN201068836Y (en) | Drop height-free long vane column-shaped hydroturbine | |
| CN111535973A (en) | Low specific speed double-inlet volute mixed-flow water turbine suitable for cooling tower | |
| RU2462612C1 (en) | Orthogonal power generating unit to convert energy of water or air flows | |
| CN112049748A (en) | Water turbine and hydroelectric generator | |
| CN110296032B (en) | Bidirectional full-through-flow turbine | |
| CN115585140A (en) | Shaftless high-cavitation-resistance low-amplitude vibration reversible axial flow fluid machine | |
| CN103953491A (en) | Direct-drive runoff water turbine for hydrodynamic cooling tower | |
| CN111577508A (en) | High-specific-speed axial flow water turbine with double-inlet volute | |
| RU2599096C2 (en) | Method for imparting motion to rotor (versions) and rotor | |
| CN212296693U (en) | Tidal current through-flow type double-rotating-wheel combined water turbine | |
| CN106762332B (en) | Direct-flushing general water turbine and bucket thereof | |
| CN2583385Y (en) | Archimedean screw rotary wheel | |
| CN213598112U (en) | Bidirectional through-flow turbine with novel draft tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |