CN203684182U - Improved spillway - Google Patents
Improved spillway Download PDFInfo
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- CN203684182U CN203684182U CN201420040380.7U CN201420040380U CN203684182U CN 203684182 U CN203684182 U CN 203684182U CN 201420040380 U CN201420040380 U CN 201420040380U CN 203684182 U CN203684182 U CN 203684182U
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Abstract
The utility model discloses an improved spillway which comprises a turbulent flow section, a decompression section and a water outlet section, wherein the turbulent flow section, the decompression section and the water outlet section are arranged in a serial connection mode. The turbulent flow section comprises multiple rows of piers, every two rows of the piers are arranged in a staggered mode, the horizontal position of the decompression section is lower than that of the turbulent flow section, the intersection portion of the decompression section and the turbulent flow section is provided with two rows of water blocking ridges, the two rows of the water blocking ridges are arranged in a staggered mode, the contact faces of the water blocking ridges and water flow are of arc shapes concave downwards, each contact face is provided with a first water inlet, and the side face of each water blocking ridge is provided with a first water outlet; the bottom face of the decompression section is an inclined face in the direction of the water flow, the bottom face of the turbulent flow section is provided with a second water inlet, the bottom face of the decompression section is provided with a second water outlet, the second water inlet and the second water outlet are connected through an invisible channel, and the bottom face of the decompression section is provided with a C-shaped backflushing channel; the water outlet section is trapezoid. The improved spillway can overcome defects in the prior art, further reduces kinetic energy of the water flow and reduces sand cleaning time, and the length of the whole spillway is shortened.
Description
Technical field
The utility model relates to a kind of water engineering facility, especially a kind of improved flood spillway.
Background technology
Flood spillway in Hydraulic and Hydro-Power Engineering generally includes control section, lets out groove and absorption basin.The energy dissipater that flood spillway adopts generally has two kinds: flip trajectory bucket and absorption basin energy dissipating.But flip trajectory bucket because of flood-discharge atomizing and punching hole deeply larger on downstream resident's productive life and side slope protection impact, and absorption basin energy dissipating causes compared with long that excavated volume is large and excavation slope is high because of absorption basin length, difficulty of construction and construction investment are all larger.
Chinese utility model patent CN202913400U is in order to address this problem, a kind of shore spillway is disclosed, although this technical scheme has played certain effect to reducing water flow impact pressure, but the kinetic energy of its water outlet is still larger, in addition, this structure is easily subject to influence to sediment, and maintenance time is long.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of improved flood spillway, can improve the deficiencies in the prior art, has further reduced the kinetic energy of current, has shortened the length of whole flood spillway, and has reduced the clear husky time.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of improved flood spillway, comprise turbulent flow section, the pressure that disappears section and water exit end that series connection arranges, turbulent flow section comprises several rows pier stud, adjacent two row pier studs are crisscross arranged, and disappear and press the horizontal level of section lower than turbulent flow section, disappear and press section to be provided with several banks of carrying water with crossing punishment two row of turbulent flow section, the two row bank of carrying water is crisscross arranged, carry water bank and contact surfaces current are the arc to lower recess, are provided with the first water inlet on contact surface, and the side of the bank of carrying water is provided with the first delivery port; The bottom surface of the pressure that disappears section is the inclined-plane along water (flow) direction, the bottom surface of turbulent flow section is provided with the second water inlet, disappear and press the bottom surface of section to be provided with the second delivery port, the second water inlet is connected by undercut with the second delivery port, disappear and press the bottom surface of section to be provided with C shape recoil runner, the water inlet of C shape recoil runner and delivery port are towards turbulent flow section one side; Water exit end is trapezoidal, and the entrance width of water exit end is less than exit width.
As preferably, the level cross-sectionn of described pier stud is oval, and the major axis of oval cross section is parallel to water (flow) direction.
As preferably, described in disappear and press the lowest part of section bottom surface to be provided with blow-off pipe, blow-off pipe is connected with syphon.
The beneficial effect that adopts technique scheme to bring is: turbulent flow section of the present utility model is used oval pier stud, makes the current that flow into produce turbulent flow by clashing into pier stud, and energy is tentatively consumed.The axle of pier stud level cross-sectionn is parallel to water (flow) direction, can improve the flow of turbulent flow section, avoids turbulent flow section to occur " flow bottleneck ".Carry water bank and contact surfaces current are the arc to lower recess, and more horizontal velocity is converted into vertical speed, can improve the upper punch height of current.Current flow through while carrying water bank, and some current flow into from the first water inlet, flow out from the first delivery port, form oblique jet, interact with the current of horizontal direction, further reduce the horizontal flow velocity of current.The water holding in the current that fall and the pressure section that disappears impacts deceleration, and the current of Xiao Yaduan lower floor, through C shape recoil runner formation reverse flow, mix mutually with forward current, carry out energy dissipating.The part high potential energy current of turbulent flow section flow out from the second delivery port, and flow velocity increases, and offset and press the silt of section bottom precipitation to rinse.The bottom surface of the pressure that disappears section is inclined design, can focus on bottom surface minimum point by not being washed the residual silt losing no time, and regularly uses syphon to clear up, and has greatly reduced maintenance time.Water exit end is trapezoidal, reduces flow velocity by increasing current by area through a step.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a specific embodiment of the utility model.
In figure: 1, turbulent flow section; 2, disappear and press section; 3, water exit end; 4, pier stud; 5, the bank of carrying water; 6, contact surface; 7, the first water inlet; 8, the first delivery port; 9, the second water inlet; 10, the second delivery port; 11, undercut; 12, C shape recoil runner; 13, blow-off pipe; 14, syphon; 15, screen pack.
The specific embodiment
With reference to Fig. 1, specific embodiment of the utility model comprises a kind of improved flood spillway, comprise turbulent flow section 1, the pressure that disappears section 2 and water exit end 3 that series connection arranges, turbulent flow section 1 comprises three row pier studs 4, adjacent two row pier studs 4 are crisscross arranged, disappear and press the horizontal level of section 2 lower than turbulent flow section 1, disappear and press section 2 to be provided with several banks 5 of carrying water with crossing punishment two row of turbulent flow section 1, the two row bank 5 of carrying water is crisscross arranged, carry water contact surfaces 6 bank 5 and current for the arc to lower recess, on contact surface 6, be provided with the first water inlet 7, the side of the bank 5 of carrying water is provided with the first delivery port 8; The bottom surface of the pressure that disappears section 2 is the inclined-plane along water (flow) direction, the bottom surface of turbulent flow section 1 is provided with the second water inlet 9, disappear and press the bottom surface of section 2 to be provided with the second delivery port 10, the second water inlet 9 is connected by undercut 11 with the second delivery port 10, disappear and press the bottom surface of section 2 to be provided with C shape recoil runner 12, the water inlet of C shape recoil runner 12 and delivery port are towards turbulent flow section 1 one sides; Water exit end 3 is trapezoidal, and the entrance width of water exit end 3 is less than exit width.
It should be noted that the level cross-sectionn of described pier stud 4 is for oval, and the major axis of oval cross section is parallel to water (flow) direction.
In addition, described in disappear press section 2 bottom surfaces lowest part be provided with blow-off pipe 13, blow-off pipe 13 is connected with syphon 14.
Wherein, pier stud 4 and carry water and be provided with screen pack 15 between bank 5.The second water inlet 9 is arranged on two row and carries water between bank 5.The major axis of pier stud 4 level cross-sectionns and the preferred proportion of minor axis are 4: 1, the preferred curvature radius of contact surface 6 is 20: 1 with the preferred ratio of the horizontal projection length of contact surface 6, disappear and press the angle of inclination of section 2 bottom surfaces to be preferably 10 °, turbulent section 1 is 1: 3 with the preferred proportion of the difference in height of the pressure section 2 that disappears and the width of the pressure section 2 that disappears, and the preferred proportion of water exit end 3 imports and exit width is 2: 5.Adopt above-mentioned preferred parameter, compared with prior art can, keeping, under the constant prerequisite of whole flood spillway length, reducing underwater bed erosion depth more than 60%, if keep underwater bed erosion depth constant, can shorten the length of flood spillway more than 50%.
Operating principle of the present utility model is: turbulent flow section 1 of the present utility model is used oval pier stud 4, makes the current that flow into produce turbulent flow by clashing into pier stud 4, and energy is tentatively consumed.The axle of pier stud 4 level cross-sectionns is parallel to water (flow) direction, can improve the flow of turbulent flow section 1, avoids turbulent flow section 1 to occur " flow bottleneck ".Carry water contact surfaces 6 bank 5 and current for the arc to lower recess, more horizontal velocity is converted into vertical speed, can improve the upper punch height of current.Current flow through while carrying water bank 5, and some current flow into from the first water inlet 7, flow out from the first delivery port 8, form oblique jet, interact with the current of horizontal direction, further reduce the horizontal flow velocity of current.The water holding in the current that fall and the pressure section 2 that disappears impacts deceleration, and the current of Xiao Yaduan 2 lower floors form reverse flow through C shape recoil runner 12, mutually mix with forward current, carry out energy dissipating.The part high potential energy current of turbulent flow section 1 flow out from the second delivery port 10, and flow velocity increases, and offset and press the silt of section 2 bottom precipitations to rinse.The bottom surface of the pressure that disappears section 2 is inclined design, can focus on bottom surface minimum point by not being washed the residual silt losing no time, and regularly uses syphon 14 to clear up.Water exit end 3 is trapezoidal, reduces flow velocity by increasing current by area through a step.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. an improved flood spillway, it is characterized in that: comprise the turbulent flow section (1) that series connection arranges, disappear and press section (2) and water exit end (3), turbulent flow section (1) comprises several rows pier stud (4), adjacent two row pier studs (4) are crisscross arranged, disappear and press the horizontal level of section (2) lower than turbulent flow section (1), disappear and press section (2) to be provided with several banks of carrying water (5) with crossing punishment two row of turbulent flow section (1), the two row bank (5) of carrying water is crisscross arranged, the bank of carrying water (5) with contact surfaces current (6) for to the arc of lower recess, on contact surface (6), be provided with the first water inlet (7), the carry water side of bank (5) is provided with the first delivery port (8), the bottom surface of the pressure section (2) that disappears is the inclined-plane along water (flow) direction, the bottom surface of turbulent flow section (1) is provided with the second water inlet (9), disappear and press the bottom surface of section (2) to be provided with the second delivery port (10), the second water inlet (9) is connected by undercut (11) with the second delivery port (10), disappear and press the bottom surface of section (2) to be provided with C shape recoil runner (12), the water inlet of C shape recoil runner (12) and delivery port are towards turbulent flow section (1) one side, water exit end (3) is trapezoidal, and the entrance width of water exit end (3) is less than exit width.
2. improved flood spillway according to claim 1, is characterized in that: the level cross-sectionn of described pier stud (4) is for oval, and the major axis of oval cross section is parallel to water (flow) direction.
3. improved flood spillway according to claim 1, is characterized in that: described in disappear press section (2) bottom surface lowest part be provided with blow-off pipe (13), blow-off pipe (13) is connected with syphon (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040380.7U CN203684182U (en) | 2014-01-17 | 2014-01-17 | Improved spillway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040380.7U CN203684182U (en) | 2014-01-17 | 2014-01-17 | Improved spillway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203684182U true CN203684182U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420040380.7U Expired - Fee Related CN203684182U (en) | 2014-01-17 | 2014-01-17 | Improved spillway |
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| Country | Link |
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| CN (1) | CN203684182U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605321A (en) * | 2021-01-21 | 2021-11-05 | 秦超 | Earth-rock dam bank spillway chute foundation drainage structure |
| CN114703797A (en) * | 2022-04-12 | 2022-07-05 | 青岛东汇泉科技有限公司 | Device and method for reducing sea waves and/or tides and use of the device |
-
2014
- 2014-01-17 CN CN201420040380.7U patent/CN203684182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605321A (en) * | 2021-01-21 | 2021-11-05 | 秦超 | Earth-rock dam bank spillway chute foundation drainage structure |
| CN114703797A (en) * | 2022-04-12 | 2022-07-05 | 青岛东汇泉科技有限公司 | Device and method for reducing sea waves and/or tides and use of the device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20150117 |
|
| EXPY | Termination of patent right or utility model |