CN213267769U - Be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears - Google Patents

Be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears Download PDF

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Publication number
CN213267769U
CN213267769U CN202021621550.2U CN202021621550U CN213267769U CN 213267769 U CN213267769 U CN 213267769U CN 202021621550 U CN202021621550 U CN 202021621550U CN 213267769 U CN213267769 U CN 213267769U
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CN
China
Prior art keywords
water inlet
vortex
plate
inverted siphon
disappear
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Expired - Fee Related
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CN202021621550.2U
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Chinese (zh)
Inventor
傅宗甫
张茹玉
吕家才
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Hohai University HHU
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Hohai University HHU
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Abstract

The utility model discloses a be applied to side direction intaking and fall many pipelines of siphon water inlet combination vortex breaking device, including oval curve side wall (1), trapezoidal roof beam (2), water conservancy diversion mound (3), transversely eliminate vortex board (4) and two vortex boards (5) that disappear, oval curve side wall (1) paste the wall and be provided with trapezoidal roof beam (2) that erects, trapezoidal roof beam (2) that erects sets up in water inlet parting joint department, water conservancy diversion mound (3) parallel arrangement has water inlet department, transversely eliminate vortex board (4) and set up in water inlet gate the place ahead and perpendicular to water inlet rivers direction, two disappear vortex board (5) and water inlet parting joint parallel and be located transversely eliminate vortex board (4) the place ahead. The utility model provides a pair of be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex elimination device, simple structure, construction convenience, low cost.

Description

Be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears
Technical Field
The utility model relates to a be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex elimination device belongs to hydraulic construction technical field.
Background
The inverted siphon is used as a main cross water delivery building and has the characteristics of less engineering quantity, large water delivery quantity, unprecedented scale and the like. The method is widely applied to water delivery pipe networks in China, particularly to south-to-north water transfer projects. But is limited by engineering topography, the water flow rotation phenomenon with a large range usually occurs before the inverted siphon pressure water inlet, and the air suction vortex can be generated when the strength is large, so that the water flow state of the water inlet is deteriorated, the discharge capacity of the pipeline is reduced, the water delivery efficiency is reduced, and the hydraulic buildings such as the water inlet and the inverted siphon pipeline are damaged to a certain extent.
The factors that induce the formation of a vortex in front of the water inlet are mainly three: water inlet arrangement, water inlet size and water flow conditions (submerged water depth). The inflow condition of the inverted siphon pipeline for laterally feeding water is unfavorable, vertical shaft vortex which is harmful to engineering is easily generated, and the vertical shaft vortex must be eliminated.
At present, the simplest and widely adopted method for eliminating the vortex is to ensure that the submerged water depth in front of the pressure water inlet exceeds the critical water depth, but the project is not economical by simply increasing the submerged water depth, and part of the project is limited by conditions such as terrain and the like, so that the arrangement form of the water inlet pool cannot be changed, and other vortex-eliminating measures must be adopted.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a simple structure, construction convenience and low cost are applied to the side direction and intake the many pipelines of siphon water inlet combination vortex eliminating device.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the utility model provides a be applied to side direction and intake many pipelines of siphon water inlet combination vortex device that disappears, includes elliptic curve side wall, trapezoidal roof beam, water conservancy diversion mound, transversely disappears the vortex board and two disappear the vortex board, elliptic curve side wall wainscot is provided with trapezoidal roof beam that erects, trapezoidal roof beam setting is in water inlet parting department of erecting, water conservancy diversion mound parallel arrangement is in water inlet department, transversely disappear the vortex board setting in water inlet gate the place ahead and perpendicular to water inlet rivers direction, two disappear the vortex board and divide the parallel and be located with the water inlet parting transversely disappear vortex board the place ahead.
The ratio of the long axis to the short axis of the elliptic curve side wall is 4: 1.
The ratio of the lower bottom to the height of the trapezoidal vertical beam is 7: 4.
The length of the diversion pier is 6-12 m.
The distance between the transverse vortex eliminating plate and the water inlet gate is 1.5-2 m, and the height difference between the transverse vortex eliminating plate and the bottom plate is 6.5-7.5 m.
The distance between the two eddy eliminating plates and the slope bottom is 0.5-1 m, and the height difference between the two eddy eliminating plates and the bottom plate is 6.5-7.5 m.
The trapezoidal vertical beam, the transverse eddy eliminating plate and the two eddy eliminating plates have the same elevation with the top of the water inlet gate.
The bottom of the transverse vortex-eliminating plate is 0.3m lower than that of the two vortex-eliminating plates.
The utility model has the advantages that: the utility model provides a combined vortex eliminating device applied to a lateral water inlet inverted siphon multi-pipeline water inlet, which has simple structure, relatively low cost and convenient construction; after the device is implemented, the side incoming flow can be stabilized, the water flow is separated under the vortex-eliminating plate, the underflow and the surface flow can be effectively mixed, the flow velocity along the main flow direction is redistributed, the condition generated by the vertical shaft vortex is damaged, and the backflow and the vortex of the water inlet pool are effectively eliminated.
Drawings
Fig. 1 is a schematic top view of the vortex-eliminating device applied to the side-inlet inverted-siphon multi-pipe water inlet combination of the present invention;
fig. 2 is a schematic cross-sectional structure at a in fig. 1.
The reference numbers in the figures are as follows: 1-elliptic curve side wall; 2-trapezoidal vertical beams; 3-a flow guide pier; 4-transverse vortex elimination plate; 5-two eddy eliminating plates.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and the following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1 and figure 2, the utility model provides a be applied to side direction intake and fall many pipelines of siphon water inlet combination vortex elimination device, including oval curve side wall 1, trapezoidal perpendicular roof beam 2, water conservancy diversion mound 3, transversely disappear vortex board 4 and two and disappear vortex board 5. When water enters from the side direction, the water flow and the axis of the water inlet pool form a certain angle, and the flow velocity in the water inlet pool is seriously distributed unevenly in the transverse direction and the longitudinal direction under the action of the inertia force of the water flow and the restraint of the side wall, so that a backflow area is formed, and even backflow and vortexes with different degrees are generated. The utility model discloses set up elliptic curve side wall 1 in the side direction department of intaking, can make water inlet junction side direction incoming flow steady flow, eliminate the bias current that the side direction was intake and is aroused. Preferably, the elliptic curve has a long to short semi-axis ratio of 4: 1.
The trapezoidal vertical beam 2 is arranged at the joint of the water inlet, so that vortexes in front of the pipe orifice of the side wall can be effectively blocked. Preferably, the ratio of the lower base to the height of the trapezoidal upright beam 2 is 7: 4. The water conservancy diversion mound 3 parallel arrangement is in water inlet department, and the water conservancy diversion mound 3 prolongs to 6 ~ 12m, and preferred 8.3m, and the backward flow can be eliminated effectively to the water conservancy diversion mound 3 of certain length, makes rivers smooth-going. The transverse vortex-eliminating plate 4 is arranged at a position 1.5-2 m away from the front of the water inlet gate, preferably 1.8m, and has a height difference of 6.5-7.5 m with the bottom plate, preferably 6.9 m. The transverse vortex-eliminating plate 4 is perpendicular to the water flow direction of the water inlet, and water flow is separated under the transverse vortex-eliminating plate 4, so that the downstream flow velocity is uniformly distributed. The two eddy eliminating plates 5 are parallel to the parting joint and are positioned in front of the transverse eddy eliminating plate 4, the distance between the two eddy eliminating plates and the sloping bottom parting joint is 0.5-1 m, preferably 0.8m, the height difference between the two eddy eliminating plates and the bottom plate is 6.5-7.5 m, preferably 7.2m, the underflow and the surface flow can be effectively mixed, the flow velocity along the main flow direction is redistributed, and the condition for generating the vertical shaft vortex is damaged. The transverse vortex-eliminating plate 4 and the two vortex-eliminating plates 5 are both arranged below the normal operating water level and have a certain height difference with the inlet bottom plate, and the bottom of the transverse vortex-eliminating plate 4 is 0.3m lower than that of the two vortex-eliminating plates 5. The utility model discloses in, trapezoidal perpendicular roof beam 2, transversely disappear vortex board 4 and two and disappear vortex board 5 and all have the same elevation with the water inlet gate top.
The utility model discloses a be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex breaking device, its arrangement can effectively improve the water inlet rivers flow regime, destroys the vortical formation condition of vertical scroll, makes inverted siphon import rivers distribute evenly, reaches the purpose of eliminating the preceding vortex of water inlet.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (8)

1. The utility model provides a be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears which characterized in that: including elliptic curve side wall (1), trapezoidal perpendicular roof beam (2), water conservancy diversion mound (3), transversely disappear turbine plate (4) and two vortex boards (5) that disappear, elliptic curve side wall (1) paste the wall and are provided with trapezoidal perpendicular roof beam (2), trapezoidal perpendicular roof beam (2) set up in water inlet parting joint department, water conservancy diversion mound (3) parallel arrangement is in water inlet department, transversely disappear turbine plate (4) and set up in water inlet gate the place ahead and perpendicular to water inlet rivers direction, two disappear turbine plate (5) and water inlet parting joint parallel and are located transversely disappear turbine plate (4) the place ahead.
2. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the ratio of the length to the semi-axis of the elliptic curve side wall (1) is 4: 1.
3. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the ratio of the lower bottom to the height of the trapezoidal vertical beam (2) is 7: 4.
4. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the length of the diversion pier (3) is 6-12 m.
5. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the distance between the transverse eddy eliminating plate (4) and the water inlet gate is 1.5-2 m, and the height difference between the transverse eddy eliminating plate and the bottom plate is 6.5-7.5 m.
6. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the distance between the two eddy eliminating plates (5) and the slope bottom parting is 0.5-1 m, and the height difference between the two eddy eliminating plates and the bottom plate is 6.5-7.5 m.
7. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the trapezoidal vertical beam (2), the transverse vortex-eliminating plate (4) and the secondary vortex-eliminating plate (5) are all at the same elevation as the top of the water inlet gate.
8. The combined vortex reducing device applied to the lateral water inlet inverted siphon multi-pipeline water inlet according to claim 1, is characterized in that: the plate bottom of the transverse vortex plate (4) is 0.3m lower than that of the two vortex plates (5).
CN202021621550.2U 2020-08-05 2020-08-05 Be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears Expired - Fee Related CN213267769U (en)

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CN202021621550.2U CN213267769U (en) 2020-08-05 2020-08-05 Be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears

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Application Number Priority Date Filing Date Title
CN202021621550.2U CN213267769U (en) 2020-08-05 2020-08-05 Be applied to side direction and intake many pipelines of inverted siphon water inlet combination vortex device that disappears

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114482194A (en) * 2021-12-31 2022-05-13 河海大学 Optimize rectifier structure of horizontal water intaking flow state of trapezoidal river course section open channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114482194A (en) * 2021-12-31 2022-05-13 河海大学 Optimize rectifier structure of horizontal water intaking flow state of trapezoidal river course section open channel

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Granted publication date: 20210525

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