US20130276926A9 - Aerated Swirling Vertical Shaft with Double Volute Chambers - Google Patents
Aerated Swirling Vertical Shaft with Double Volute Chambers Download PDFInfo
- Publication number
- US20130276926A9 US20130276926A9 US13/643,775 US201013643775A US2013276926A9 US 20130276926 A9 US20130276926 A9 US 20130276926A9 US 201013643775 A US201013643775 A US 201013643775A US 2013276926 A9 US2013276926 A9 US 2013276926A9
- Authority
- US
- United States
- Prior art keywords
- aerated
- vertical shaft
- volute chamber
- section
- length
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/002—Injecting air or other fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/10—Submerged units incorporating electric generators or motors
- F03B13/105—Bulb groups
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]
Definitions
- the present invention relates to a swirling vertical shaft, which is an energy dissipating facility used for hydraulic and hydropower engineering, in particular to an aerated swirling vertical shaft which is suitable for high head and large discharge.
- Chinese patent application with publishing No. CN 101294377A provides a swirling vertical shaft provided with an aeration ridge.
- the aeration ridge is arranged on the wall surface of the lower middle section of the vertical shaft, and formed by gradually shrinking the vertical shaft connecting with the upper flat section of a flood discharging tunnel from the middle part to the lower middle part and then suddenly expanding the wall surface.
- the swirling vertical shaft provided with a conventional annular aeration ridge although the aeration condition of the water stream can be improved to enable near-wall water layer at the lower reaches to become into aerated water streams and mitigate the damage of overflowing section at the lower middle part of the vertical shaft caused by cavitation erosion.
- the swirling vertical shaft of such a structure is only suitable for small discharge for the small volume of the cavity for containing air formed by suddenly expanding makes the amount of air aerated into the water stream small.
- it is difficult to fully aerate the water stream in the vertical shaft the water stream in the vertical shaft cannot be discharged smoothly, and the concentration of the air mixed in the water stream cannot be increased effectively under the condition of large discharge and high head.
- the objective of the present invention is to overcome the defects of the prior art and provide an aerated swirling vertical shaft with double volute chambers to solve the problem of insufficient aeration on the wall surface caused by a sealed cavity of the swirling vertical shaft under the condition of large discharge and high head, so that the water stream in the vertical shaft can be discharged smoothly and the wall surface of the vertical shaft may avoid being destroyed due to cavitation and cavitation erosion.
- the present invention provides an aerated swirling vertical shaft with double volute chambers, comprising an upper volute chamber and a first shrinking section beneath the upper volute chamber, a venting passage outside the upper volute chamber, a vertical shaft section beneath the first shrinking section, and further comprising an aerated lower volute chamber and a second shrinking section communicated with the aerated lower volute chamber between the first shrinking section and the vertical shaft section, wherein the upper end of the aerated lower volute chamber is connected with the first shrinking section, the lower end of the second shrinking section is connected with the vertical shaft section; the upper end of the venting passage is communicated with the atmosphere and the lower end is communicated with the aerated lower volute chamber.
- the aerated swirling vertical shaft with double volute chambers provided by the present invention preferably adopts the following structural parameters:
- the diameter D 1 of the upper volute chamber is determined according to the flow rate of water stream entering into the vertical shaft, and the aerated lower volute chamber has a diameter D 2 which is greater than or equal to the diameter D 1 of the upper volute chamber.
- the length L 1 of the upper volute chamber is 2.0 D 1 to 3.0 D 1
- the ratio of the length L 2 of the first shrinking section to the length L 1 of the upper volute chamber is 1:2 to 1:1
- the gradient i 1 of the first shrinking section (3) is 1:15 to 1:10
- D 1 is the diameter of the upper volute chamber.
- the length L 3 of the aerated lower volute chamber is 0.4 D 2 to 1.0 D 2
- the ratio of the length L 4 of the second shrinking section to the length L 3 of the aerated lower volute chamber is 2:1 to 4:1
- the gradient i 2 of the second shrinking section is 1:15 to 1:10
- D 2 is the diameter of the aerated lower volute chamber.
- the air flows through the venting passage and flows into the aerated lower volute chamber.
- the aerated lower volute chamber can contain more air to be mixed with the water stream spouted out of the first shrinking section, the content of air entering the water stream in the vertical shaft section is effectively increased, and the problem of insufficient aeration on the wall surface caused by a sealed cavity of the swirling vertical shaft is avoided.
- the aerated swirling vertical shaft with double volute chambers has more remarkable aeration effects under the condition of large discharge and high head, is capable of fully mixing water and air, increases the content of air in the water stream significantly, stabilizes the water stream form, and further achieves the effect of eliminating the damage on the wall surface of the vertical shaft caused by cavitation erosion, and ensuring the safe operation of the vertical shaft and the flood discharge tunnel.
- FIG. 1 is a structure diagram of the aerated swirling vertical shaft with double volute chambers according to the present invention (viewed from section VI-VI of FIG. 2 );
- FIG. 2 is a top view of FIG. 1 , showing a connection relation between the aerated swirling vertical shaft with double volute chambers and an approach channel, a pressing slope section and a flood discharging tunnel according to the present invention
- FIG. 3 is a I-I sectional view of FIG. 1 , in which the section is the section of an upper volute chamber;
- FIG. 4 is a II-II sectional view of FIG. 1 , in which the section is the section of an aerated lower volute chamber;
- FIG. 5 is a III-III sectional view of FIG. 1 , in which the section is the section of a vertical shaft section;
- FIG. 6 is a IV-IV sectional view of FIG. 1 , in which the section is the section of a pressing slope section;
- FIG. 7 is a V-V sectional view of FIG. 1 , in which the section is the section of a flood discharging tunnel.
- the aerated swirling vertical shaft with double volute chambers in the following embodiments is designed based on a flood discharging tunnel in a pivotal project of a certain hydropower station.
- the flood discharging tunnel of the vertical shaft is of swirling flow internal energy dissipation type, the elevation of the bottom plate of the flood discharging tunnel of the vertical shaft is 2690 m, the elevation of the top is 2852 m, and the flow velocity V of the approach channel is 12 m/s to 20 m/s.
- Embodiment 1 is described as follows:
- FIG. 1 and FIG. 2 the structure of the aerated swirling vertical shaft with double volute chambers is shown in FIG. 1 and FIG. 2 , which comprises an upper volute chamber 2 , a first shrinking section 3 beneath the upper volute chamber 2 , an aerated lower volute chamber 5 , a second shrinking section 6 beneath the aerated lower volute chamber 5 , a vertical shaft section 7 and a venting passage 4 .
- the first shrinking section 3 beneath the upper volute chamber is connected with the aerated lower volute chamber 5
- the second shrinking section 6 beneath the aerated lower volute chamber is connected with the vertical shaft section 7 .
- venting passages 4 which are symmetrically installed on the outer walls of the upper volute chamber and the first shrinking section beneath the upper volute chamber.
- the upper ends of the venting passages are communicated with the atmosphere, and the lower ends are connected with the top of the aerated lower volute chamber.
- the upper volute chamber 2 is connected with the approach channel 1 , and the water stream in the approach channel is introduced into the vertical shaft from the upper volute chamber tangentially.
- the lower part of the vertical shaft section 7 is communicated with the flood discharging tunnel 10 through the anti-arc section 8 and pressing slope section 9 .
- both of the upper volute chamber 2 and the aerated lower volute chamber 5 are preferably cylindrical to facilitate the manufacture.
- the venting passage 4 is designed such that the axial projection of the lower end surface of the venting passage 4 is located within the aerated lower volute chamber, so as to expand the volume for containing air as large as possible.
- a jet flow is formed when the water stream from the upper volute chamber 2 flows through the first shrinking section 3 .
- the volume of the jet flow in the suddenly expanded cylindrical aerated lower volute chamber 5 is small, so the usable volume of the aerated lower volute chamber 5 for containing air from the venting passage is increased.
- the jetted water flow diffuses and air aerates in the jetted water flow to form an aerated layer.
- the air is entrapped during the downward process, so that the near-wall water layers at the lower reaches become into aerated water streams, resulting in the air mixing concentration in the water stream being not less than the minimum concentration value effective for corrosion prevention, thereby achieving the improvement in corrosion prevention performance under the condition of high head and of large discharge.
- the venting passage 4 extends linearly, which makes it easy to manufacture.
- two venting passages 4 are taken as an example, which are arranged around the upper volute chamber 2 uniformly. In practical use, the number of the venting passages 4 is not limited to two.
- the second shrinking section 6 is used for transitionally connecting the cylindrical aerated lower volute chamber 5 and the vertical shaft section 7 .
- the flow rate of water stream is 400 m 3 /s
- the aerated swirling vertical shaft with double volute chambers has relevant structural parameters as follows:
- the cross section of the upper volute chamber 2 is shown in FIG. 3 , in which the diameter D 1 is 10 m, and the length L 1 is 30 m; the length L 2 of the first shrinking section 3 on the lower part of the upper volute chamber is 15 m, and the gradient i 1 is 1:10.
- the cross section of the aerated lower volute chamber 5 is shown in FIG. 4 , in which the diameter D 2 is 10 m, and the length L 3 is 5 m; the length L 4 of the second shrinking section 6 on the lower part of the upper volute chamber is 20 m, and the gradient i 2 is 1:15.
- the cross section of the vertical shaft section 7 is shown in FIG.
- the cross section of the pressing slope section 9 is shown in FIG. 6 , in which the length L 7 is 35 m, and the gradient i 3 is 1:15.
- the cross section of the flood discharging tunnel 10 is shown in FIG. 7 , in which the width B is 5 m, and the height H is 7 m.
- the aerated swirling vertical shaft with double volute chambers according to the embodiment of the present invention has remarkable aeration effects under the condition of large discharge and high head, and is capable of increasing the content of air in the water stream effectively by 4% or more.
- Embodiment 2 is described as follows:
- FIG. 1 and FIG. 2 the structure of the aerated swirling vertical shaft with double volute chambers is shown in FIG. 1 and FIG. 2 . Its components and connection position of each component are the same as those in Embodiment 1, differing from Embodiment 1 in that the flow rate of water stream in the vertical shaft is 600 m 3 /s, thereby changing the structural parameters.
- the aerated swirling vertical shaft with double volute chambers has relevant structural parameters as follows:
- the cross section of the upper volute chamber 2 is shown in FIG. 3 , in which the diameter D 1 is 12 m, and the length L 1 thereof is 24 m; the length L 2 of the first shrinking section 3 on the lower part of the upper volute chamber is 24 m, and the gradient i 1 is 1:12.
- the cross section of the aerated lower volute chamber 5 is shown in FIG. 4 , in which the diameter D 2 is 14 m, and the length L 3 thereof is 12 m; the length L 4 of the second shrinking section 6 on the lower part of the aerated upper volute chamber is 30 m, and the gradient i 2 is 1:10.
- the cross section of the vertical shaft section 7 is shown in FIG.
- the cross section of the pressing slope section 9 is shown in FIG. 6 , in which the length L 7 is 30 m, and the gradient i 3 is 1:10.
- the cross section of the flood discharging tunnel 10 is as shown in FIG. 7 , in which the width B is 5 m, and the height H is 7 m.
- the aerated swirling vertical shaft with double volute chambers according to the embodiment of the present invention has remarkable aeration effects under the condition of large discharge and high head, and is capable of increasing the content of air in the water stream effectively by 4% or more.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- The present invention relates to a swirling vertical shaft, which is an energy dissipating facility used for hydraulic and hydropower engineering, in particular to an aerated swirling vertical shaft which is suitable for high head and large discharge.
- The engineering practice shows that, under the condition of large discharge and high head, the energy dissipation of the swirling vertical shaft encounters the following problems, that is, 1) excessive flow velocity in the vertical shaft increases the risks of cavitation and cavitation erosion on the wall surface; 2) due to the centrifugal force of water stream, it is difficult to perform aeration by using the conventional annular aeration ridge, the function of aeration and cavitation mitigation can not work.
- Chinese patent application with publishing No. CN 101294377A provides a swirling vertical shaft provided with an aeration ridge. The aeration ridge is arranged on the wall surface of the lower middle section of the vertical shaft, and formed by gradually shrinking the vertical shaft connecting with the upper flat section of a flood discharging tunnel from the middle part to the lower middle part and then suddenly expanding the wall surface. Compared to the swirling vertical shaft provided with a conventional annular aeration ridge, although the aeration condition of the water stream can be improved to enable near-wall water layer at the lower reaches to become into aerated water streams and mitigate the damage of overflowing section at the lower middle part of the vertical shaft caused by cavitation erosion. However, the swirling vertical shaft of such a structure is only suitable for small discharge for the small volume of the cavity for containing air formed by suddenly expanding makes the amount of air aerated into the water stream small. Under the condition of large discharge and high head, it is difficult to fully aerate the water stream in the vertical shaft, the water stream in the vertical shaft cannot be discharged smoothly, and the concentration of the air mixed in the water stream cannot be increased effectively under the condition of large discharge and high head.
- The objective of the present invention is to overcome the defects of the prior art and provide an aerated swirling vertical shaft with double volute chambers to solve the problem of insufficient aeration on the wall surface caused by a sealed cavity of the swirling vertical shaft under the condition of large discharge and high head, so that the water stream in the vertical shaft can be discharged smoothly and the wall surface of the vertical shaft may avoid being destroyed due to cavitation and cavitation erosion.
- The present invention provides an aerated swirling vertical shaft with double volute chambers, comprising an upper volute chamber and a first shrinking section beneath the upper volute chamber, a venting passage outside the upper volute chamber, a vertical shaft section beneath the first shrinking section, and further comprising an aerated lower volute chamber and a second shrinking section communicated with the aerated lower volute chamber between the first shrinking section and the vertical shaft section, wherein the upper end of the aerated lower volute chamber is connected with the first shrinking section, the lower end of the second shrinking section is connected with the vertical shaft section; the upper end of the venting passage is communicated with the atmosphere and the lower end is communicated with the aerated lower volute chamber.
- By experiments, the aerated swirling vertical shaft with double volute chambers provided by the present invention preferably adopts the following structural parameters:
- 1. The diameter D1 of the upper volute chamber is determined according to the flow rate of water stream entering into the vertical shaft, and the aerated lower volute chamber has a diameter D2 which is greater than or equal to the diameter D1 of the upper volute chamber.
- 2. The length L1 of the upper volute chamber is 2.0 D1 to 3.0 D1, the ratio of the length L2 of the first shrinking section to the length L1 of the upper volute chamber is 1:2 to 1:1, the gradient i1 of the first shrinking section (3) is 1:15 to 1:10, wherein D1 is the diameter of the upper volute chamber.
- 3. The length L3 of the aerated lower volute chamber is 0.4 D2 to 1.0 D2, the ratio of the length L4 of the second shrinking section to the length L3 of the aerated lower volute chamber is 2:1 to 4:1, the gradient i2 of the second shrinking section is 1:15 to 1:10, wherein D2 is the diameter of the aerated lower volute chamber.
- The present invention has the following technical effects:
- 1. Since the aerated lower volute chamber is provided beneath the first shrinking section which is provided beneath the lower part of the upper volute chamber, the air flows through the venting passage and flows into the aerated lower volute chamber. As the aerated lower volute chamber can contain more air to be mixed with the water stream spouted out of the first shrinking section, the content of air entering the water stream in the vertical shaft section is effectively increased, and the problem of insufficient aeration on the wall surface caused by a sealed cavity of the swirling vertical shaft is avoided. The aerated swirling vertical shaft with double volute chambers has more remarkable aeration effects under the condition of large discharge and high head, is capable of fully mixing water and air, increases the content of air in the water stream significantly, stabilizes the water stream form, and further achieves the effect of eliminating the damage on the wall surface of the vertical shaft caused by cavitation erosion, and ensuring the safe operation of the vertical shaft and the flood discharge tunnel.
- 2. Optimization of structural parameters ensures the stability of aeration and cavitation mitigation effects of the aerated swirling vertical shaft with double volute chambers provided by the present invention.
-
FIG. 1 is a structure diagram of the aerated swirling vertical shaft with double volute chambers according to the present invention (viewed from section VI-VI ofFIG. 2 ); -
FIG. 2 is a top view ofFIG. 1 , showing a connection relation between the aerated swirling vertical shaft with double volute chambers and an approach channel, a pressing slope section and a flood discharging tunnel according to the present invention; -
FIG. 3 is a I-I sectional view ofFIG. 1 , in which the section is the section of an upper volute chamber; -
FIG. 4 is a II-II sectional view ofFIG. 1 , in which the section is the section of an aerated lower volute chamber; -
FIG. 5 is a III-III sectional view ofFIG. 1 , in which the section is the section of a vertical shaft section; -
FIG. 6 is a IV-IV sectional view ofFIG. 1 , in which the section is the section of a pressing slope section; and -
FIG. 7 is a V-V sectional view ofFIG. 1 , in which the section is the section of a flood discharging tunnel. - In these figures, 1-approach channel, 2-upper volute chamber, 3-first shrinking section, 4-venting passage, 5-aerated lower volute chamber, 6-second shrinking section, 7-vertical shaft section, 8-anti-arc section, 9-pressing slope section, 10-flood discharging tunnel, D1-diameter of upper volute chamber, D2-diameter of aerated lower volute chamber, D3-diameter of vertical shaft section, L1-length of upper volute chamber, L2-length of first shrinking section, i1-gradient of first shrinking section, L3-length of aerated lower volute chamber, L4-length of second shrinking section, i2-gradient of second shrinking section, L5-length of vertical shaft section, L6-height from bottom plate of vertical shaft to downstream connection section, L7-length of pressing slope, i3-gradient of pressing slope section, R-radius of anti-arc section, B-width of flood discharging tunnel, H-height of flood discharging tunnel.
- The embodiments of the present invention will be described in detail below as shown in drawings. The structure of the aerated swirling vertical shaft with double volute chambers of the present invention will be further described below as shown in drawings. The aerated swirling vertical shaft with double volute chambers in the following embodiments is designed based on a flood discharging tunnel in a pivotal project of a certain hydropower station. The flood discharging tunnel of the vertical shaft is of swirling flow internal energy dissipation type, the elevation of the bottom plate of the flood discharging tunnel of the vertical shaft is 2690 m, the elevation of the top is 2852 m, and the flow velocity V of the approach channel is 12 m/s to 20 m/s.
-
Embodiment 1 is described as follows: - In this embodiment, the structure of the aerated swirling vertical shaft with double volute chambers is shown in
FIG. 1 andFIG. 2 , which comprises anupper volute chamber 2, a first shrinking section 3 beneath theupper volute chamber 2, an aerated lower volute chamber 5, asecond shrinking section 6 beneath the aerated lower volute chamber 5, avertical shaft section 7 and aventing passage 4. The first shrinking section 3 beneath the upper volute chamber is connected with the aerated lower volute chamber 5, and thesecond shrinking section 6 beneath the aerated lower volute chamber is connected with thevertical shaft section 7. There are twoventing passages 4, which are symmetrically installed on the outer walls of the upper volute chamber and the first shrinking section beneath the upper volute chamber. The upper ends of the venting passages are communicated with the atmosphere, and the lower ends are connected with the top of the aerated lower volute chamber. Theupper volute chamber 2 is connected with theapproach channel 1, and the water stream in the approach channel is introduced into the vertical shaft from the upper volute chamber tangentially. The lower part of thevertical shaft section 7 is communicated with theflood discharging tunnel 10 through theanti-arc section 8 andpressing slope section 9. - It can also be seen from the figure that, both of the
upper volute chamber 2 and the aerated lower volute chamber 5 are preferably cylindrical to facilitate the manufacture. Theventing passage 4 is designed such that the axial projection of the lower end surface of theventing passage 4 is located within the aerated lower volute chamber, so as to expand the volume for containing air as large as possible. Moreover, a jet flow is formed when the water stream from theupper volute chamber 2 flows through the first shrinking section 3. The volume of the jet flow in the suddenly expanded cylindrical aerated lower volute chamber 5 is small, so the usable volume of the aerated lower volute chamber 5 for containing air from the venting passage is increased. Then, during the advancing process, the jetted water flow diffuses and air aerates in the jetted water flow to form an aerated layer. At the same time, the air is entrapped during the downward process, so that the near-wall water layers at the lower reaches become into aerated water streams, resulting in the air mixing concentration in the water stream being not less than the minimum concentration value effective for corrosion prevention, thereby achieving the improvement in corrosion prevention performance under the condition of high head and of large discharge. It can also be seen from the figure that, theventing passage 4 extends linearly, which makes it easy to manufacture. In this embodiment, twoventing passages 4 are taken as an example, which are arranged around theupper volute chamber 2 uniformly. In practical use, the number of theventing passages 4 is not limited to two. Thesecond shrinking section 6 is used for transitionally connecting the cylindrical aerated lower volute chamber 5 and thevertical shaft section 7. - In this embodiment, the flow rate of water stream is 400 m3/s, and the aerated swirling vertical shaft with double volute chambers has relevant structural parameters as follows:
- The cross section of the
upper volute chamber 2 is shown inFIG. 3 , in which the diameter D1 is 10 m, and the length L1 is 30 m; the length L2 of the first shrinking section 3 on the lower part of the upper volute chamber is 15 m, and the gradient i1 is 1:10. The cross section of the aerated lower volute chamber 5 is shown inFIG. 4 , in which the diameter D2 is 10 m, and the length L3 is 5 m; the length L4 of thesecond shrinking section 6 on the lower part of the upper volute chamber is 20 m, and the gradient i2 is 1:15. The cross section of thevertical shaft section 7 is shown inFIG. 5 , wherein the diameter D3 is 7 m, the length L5 is 92 m, the height L6 from the bottom plate of vertical shaft to the downstream connection section is 10 m, and the radius R of theanti-arc section 8 is 15 m. The cross section of thepressing slope section 9 is shown inFIG. 6 , in which the length L7 is 35 m, and the gradient i3 is 1:15. The cross section of theflood discharging tunnel 10 is shown inFIG. 7 , in which the width B is 5 m, and the height H is 7 m. - Proved by the experiments, the aerated swirling vertical shaft with double volute chambers according to the embodiment of the present invention has remarkable aeration effects under the condition of large discharge and high head, and is capable of increasing the content of air in the water stream effectively by 4% or more.
-
Embodiment 2 is described as follows: - In this embodiment, the structure of the aerated swirling vertical shaft with double volute chambers is shown in
FIG. 1 andFIG. 2 . Its components and connection position of each component are the same as those inEmbodiment 1, differing fromEmbodiment 1 in that the flow rate of water stream in the vertical shaft is 600 m3/s, thereby changing the structural parameters. The aerated swirling vertical shaft with double volute chambers has relevant structural parameters as follows: - The cross section of the
upper volute chamber 2 is shown inFIG. 3 , in which the diameter D1 is 12 m, and the length L1 thereof is 24 m; the length L2 of the first shrinking section 3 on the lower part of the upper volute chamber is 24 m, and the gradient i1 is 1:12. The cross section of the aerated lower volute chamber 5 is shown inFIG. 4 , in which the diameter D2 is 14 m, and the length L3 thereof is 12 m; the length L4 of thesecond shrinking section 6 on the lower part of the aerated upper volute chamber is 30 m, and the gradient i2 is 1:10. The cross section of thevertical shaft section 7 is shown inFIG. 5 , in which the diameter D3 is 8 m, and the length L5 is 72 m, the height L6 from the bottom plate of vertical shaft to the downstream connection section is 10 m, and the radius R of theanti-arc section 8 is 20 m. The cross section of thepressing slope section 9 is shown inFIG. 6 , in which the length L7 is 30 m, and the gradient i3 is 1:10. The cross section of theflood discharging tunnel 10 is as shown inFIG. 7 , in which the width B is 5 m, and the height H is 7 m. - Proved by the experiments, the aerated swirling vertical shaft with double volute chambers according to the embodiment of the present invention has remarkable aeration effects under the condition of large discharge and high head, and is capable of increasing the content of air in the water stream effectively by 4% or more.
- Above contents only describe the preferred embodiments of the present invention and are not intended to limit the present invention; for one skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910060125 | 2009-07-28 | ||
CN200910060125.2 | 2009-07-28 | ||
CN2009100601252A CN101624819B (en) | 2009-07-28 | 2009-07-28 | Double volute chamber aerated type swirling flow vertical shaft |
PCT/CN2010/075520 WO2011012078A1 (en) | 2009-07-28 | 2010-07-28 | Aeration swirling flow vertical well with double volute chambers |
Publications (3)
Publication Number | Publication Date |
---|---|
US20130068332A1 US20130068332A1 (en) | 2013-03-21 |
US20130276926A9 true US20130276926A9 (en) | 2013-10-24 |
US9068671B2 US9068671B2 (en) | 2015-06-30 |
Family
ID=41520800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/643,775 Expired - Fee Related US9068671B2 (en) | 2009-07-28 | 2010-07-28 | Aerated swirling vertical shaft with double volute chambers |
Country Status (3)
Country | Link |
---|---|
US (1) | US9068671B2 (en) |
CN (1) | CN101624819B (en) |
WO (1) | WO2011012078A1 (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101624819B (en) | 2009-07-28 | 2010-12-29 | 四川大学 | Double volute chamber aerated type swirling flow vertical shaft |
CN101812832B (en) * | 2010-03-26 | 2011-05-11 | 四川大学 | Submerged cyclone shaft sluice tunnel |
CN101851909B (en) * | 2010-05-11 | 2011-11-30 | 四川大学 | H-shaped shaft flood discharge hole |
CN101886377B (en) * | 2010-07-19 | 2012-04-25 | 四川大学 | Step swirling flow vertical shaft |
CN101892654B (en) * | 2010-07-19 | 2012-05-30 | 四川大学 | Conical swirling flow vertical shaft |
CN102435414B (en) * | 2011-07-28 | 2014-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Method of decompression test of air entrainment and cavitation alleviation model |
CN102409642B (en) * | 2011-09-10 | 2014-04-16 | 四川大学 | Reducing and sudden expansion type inner energy dissipator |
CN102900053B (en) * | 2011-12-31 | 2016-06-22 | 石河子大学 | Modified model deep-cylinder stilling well |
CN102605752B (en) * | 2012-03-22 | 2014-11-26 | 四川大学 | Whirlwind hydraulic drop vertical well |
JP5846617B2 (en) * | 2012-07-24 | 2016-01-20 | 学校法人福岡大学 | Fluid transfer device and fluid transfer method |
CN102767164A (en) * | 2012-08-16 | 2012-11-07 | 华北水利水电学院 | Bidirectional inflow whirling current type shaft facility for flood discharge and energy dissipation in dam |
CN102787588A (en) * | 2012-08-16 | 2012-11-21 | 华北水利水电学院 | Shaft with vertical eddy-flow energy dissipaters of hole stoppers |
CN103031825B (en) * | 2013-01-15 | 2015-07-29 | 中国电建集团西北勘测设计研究院有限公司 | Multistage vertical shaft eddy flow combined energy dissipation structure |
CN103352451B (en) * | 2013-07-03 | 2015-06-17 | 中水东北勘测设计研究有限责任公司 | Vertical shaft spiral-flow type inner energy dissipater used for discharging ecological flows |
CN103374903B (en) * | 2013-08-14 | 2015-08-12 | 四川大学 | A kind of rotational flow silo of whole aeration |
CN103758093B (en) * | 2013-12-31 | 2016-04-13 | 四川大学 | A kind of multistage water cushion rotational flow silo flood discharging tunnel being applicable to high water head |
CN104452701B (en) * | 2014-11-12 | 2017-03-08 | 中国电建集团成都勘测设计研究院有限公司 | A kind of rotational flow silo water discharge tunnel |
CN104762934A (en) * | 2015-04-08 | 2015-07-08 | 中国水利水电科学研究院 | Transition connection device for swirling chamber and swirling tunnel during reconstructing guide tunnel into horizontal swirling tunnel |
CN106087902B (en) * | 2016-07-28 | 2018-06-15 | 中国电建集团成都勘测设计研究院有限公司 | For the scupper cyclone shaft energy-dissipating structure and water discharge method of ditch water process |
CN107044112A (en) * | 2017-05-22 | 2017-08-15 | 福建省水利水电勘测设计研究院 | Energy dissipation by aeration and gas explosion-proof flood discharge device and its flood discharging method |
CN110294227B (en) * | 2018-03-22 | 2021-01-15 | 中国石油化工股份有限公司 | Sewage tank with multistage energy dissipation device and using method of sewage tank |
CN108894192A (en) * | 2018-08-23 | 2018-11-27 | 中国电建集团成都勘测设计研究院有限公司 | High outer water vertical shaft depressurizes discharge structure |
CN110485387A (en) * | 2019-09-20 | 2019-11-22 | 中国电建集团成都勘测设计研究院有限公司 | Vertical shaft aeration discharge structure |
CN111005729B (en) * | 2019-11-29 | 2024-07-23 | 昆明理工大学 | Auxiliary energy dissipation device for vertical stilling well |
CN111851435B (en) * | 2020-08-10 | 2021-11-30 | 洛阳水利勘测设计有限责任公司 | Diving whirl-raising pier vertical shaft rotational flow energy dissipation flood discharge hole |
CN113089601A (en) * | 2021-03-09 | 2021-07-09 | 中国电建集团西北勘测设计研究院有限公司 | Improve cavern structure of whirl flood discharge hole bottom flow state |
CN113174909B (en) * | 2021-05-07 | 2021-12-31 | 中国电建集团西北勘测设计研究院有限公司 | Double-rotation energy dissipation flood discharge tunnel structure |
CN113265991B (en) * | 2021-06-22 | 2022-04-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for rebuilding multiple diversion tunnels into rotational flow vertical shaft flood discharge system |
CN115371416A (en) * | 2022-08-17 | 2022-11-22 | 中材建设有限公司 | Novel cement clinker calcining and decomposing furnace |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1840205A (en) * | 1928-08-11 | 1932-01-05 | Universal Hydraulic Corp | Fluid handling and controlling apparatus |
US2529141A (en) * | 1946-07-05 | 1950-11-07 | Neyret Beylier & Piccard Picte | Spillway installation for dams |
NL154819B (en) * | 1967-05-10 | 1977-10-17 | Shell Int Research | DEVICE FOR APPLYING A LOW VISCOSITY LAYER OF LIQUID BETWEEN A FLOW OF HIGH VISCOSITY LIQUID AND THE WALL OF A PIPELINE. |
US3701260A (en) * | 1970-05-12 | 1972-10-31 | Hosea J Soileau | Water level control device |
US3993097A (en) * | 1971-04-29 | 1976-11-23 | Shell Oil Company | Oil/water pipeline inlet with oil supply via a large chamber |
US3960653A (en) * | 1972-07-18 | 1976-06-01 | Dominion Engineering Works, Limited | Downflow control system for web making machines |
US4190070A (en) * | 1977-12-05 | 1980-02-26 | Bauer William J | Method and apparatus for controlling flow of liquid in gravity flow conduits |
US4352593A (en) * | 1980-12-23 | 1982-10-05 | Iskra Anton L | Dam spillway |
CA1244067A (en) * | 1983-09-03 | 1988-11-01 | Minoru Mita | Apparatus and method for the generation and utilization of a spiral gas stream in a pipeline |
JPS60176300U (en) * | 1984-04-23 | 1985-11-21 | 海洋工業株式会社 | water pump |
DE3532716A1 (en) * | 1985-07-30 | 1987-02-12 | Escher Wyss Gmbh | Device for slowing down jetting flow of screen water |
JPH0446765Y2 (en) * | 1985-10-09 | 1992-11-04 | ||
SU1659576A1 (en) * | 1989-02-17 | 1991-06-30 | Бакинское Отделение Всесоюзного Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Им.С.Я.Жука | Vortex well spillway |
US5360290A (en) * | 1991-12-13 | 1994-11-01 | Hitachi, Ltd. | Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump |
US5487621A (en) * | 1992-06-18 | 1996-01-30 | Hitachi, Ltd. | Large-depth underground drainage facility and method of running same |
US6106729A (en) * | 1999-01-20 | 2000-08-22 | Prince; Jack E. | Aeration assembly for dam sites |
KR100734754B1 (en) * | 2005-03-02 | 2007-07-04 | 고수부 | eddy prevention apparatus for siphon |
US7441599B2 (en) * | 2005-11-18 | 2008-10-28 | Chevron U.S.A. Inc. | Controlling the pressure within an annular volume of a wellbore |
RU2313633C2 (en) * | 2006-02-22 | 2007-12-27 | Общество с ограниченной ответственностью "Осанна" (ООО "Осанна") | Vortex water-intake fish-protective screen |
US7887258B2 (en) * | 2006-03-28 | 2011-02-15 | Mark Rubbert | Intake apparatus for dams |
CN101215380A (en) | 2007-12-26 | 2008-07-09 | 东莞捷讯橡胶有限公司 | Liquid silica gel post forming or double-emitting forming technique |
CN101215830B (en) * | 2007-12-29 | 2010-10-06 | 四川大学 | Vertical shaft rotational flow flood discharging tunnel and emptying tunnel or diversion tunnel vertical arrangement hydraulic structure combination |
CN100552147C (en) | 2008-05-23 | 2009-10-21 | 水利部交通部电力工业部南京水利科学研究院 | Reconstruction of diversion tunnel is the method for jet flow internal energy dissipating drilled shaft flood discharge hole |
CN101294377B (en) * | 2008-06-20 | 2010-11-03 | 四川大学 | Rotational flow silo equipped with air entrainment ridge |
CN101624819B (en) * | 2009-07-28 | 2010-12-29 | 四川大学 | Double volute chamber aerated type swirling flow vertical shaft |
CN101812832B (en) * | 2010-03-26 | 2011-05-11 | 四川大学 | Submerged cyclone shaft sluice tunnel |
WO2012116739A1 (en) * | 2011-03-01 | 2012-09-07 | Short Brothers Plc | A draining device |
-
2009
- 2009-07-28 CN CN2009100601252A patent/CN101624819B/en not_active Expired - Fee Related
-
2010
- 2010-07-28 US US13/643,775 patent/US9068671B2/en not_active Expired - Fee Related
- 2010-07-28 WO PCT/CN2010/075520 patent/WO2011012078A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN101624819A (en) | 2010-01-13 |
WO2011012078A1 (en) | 2011-02-03 |
US20130068332A1 (en) | 2013-03-21 |
US9068671B2 (en) | 2015-06-30 |
CN101624819B (en) | 2010-12-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9068671B2 (en) | Aerated swirling vertical shaft with double volute chambers | |
CN101294377B (en) | Rotational flow silo equipped with air entrainment ridge | |
CN107401147B (en) | A kind of multistage free-electron model formula energy dissipating drilled shaft of annular | |
CN111471499B (en) | Tubular parallel flow type gas-liquid contact absorber | |
KR20120051689A (en) | Multi-stage gas-water separation device and gas-water separator | |
CN106902663A (en) | Fluidizing type efficiently mixes static mixer | |
CN104195997A (en) | Aerated flip bucket arrangement structure suitable for high water head flood discharge hole | |
CN208966319U (en) | A kind of novel petroleum well drilling liquid-gas separator | |
CN110482720A (en) | A kind of high-efficiency aerator based on Inka aeration principle | |
CN107663851B (en) | Cavitation damage prevention curved stepped overflow dam | |
CN103374903A (en) | Whole aeration cyclone vertical shaft | |
EP2088602B1 (en) | Manufacturing method for accumulator water injection tank and flow damper | |
CN203833717U (en) | Embedded secondary spraying pipe type underwater jet aeration device | |
KR20120071622A (en) | Micro bubble type gpv-wao reactor | |
CN206971181U (en) | A kind of multichannel bank stiling basin of dispersible energy dissipating | |
CN113265991B (en) | Method for rebuilding multiple diversion tunnels into rotational flow vertical shaft flood discharge system | |
CN212670507U (en) | Wing section stilling pool | |
CN105220663B (en) | Stilling well for connecting vertical shaft with recession tunnel | |
CN209741828U (en) | High pressure jet grouting pile grouting pipe plugging structure | |
CN208995999U (en) | A kind of asynchronous three-dimensional air mixing corrosion reducing structure | |
CN110616688A (en) | Rotational flow shaft type energy dissipation structure | |
CN211421065U (en) | Spillway aeration tank structure | |
CN104971831A (en) | Water-saving spray header used for medical equipment cleaning machine | |
CN109056668A (en) | A kind of anti-cavitation facility of Stepped Spillway flaring gate pier tail portion | |
CN221547790U (en) | Sleeve natural aeration conical valve used in pressurized pipeline |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SICHUAN UNIVERSITY, CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHANG, JIANMIN;XU, WEILIN;LIU, SHANJUN;AND OTHERS;REEL/FRAME:029234/0681 Effective date: 20120807 |
|
FEPP | Fee payment procedure |
Free format text: PETITION RELATED TO MAINTENANCE FEES GRANTED (ORIGINAL EVENT CODE: PTGR); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20230630 |