CN106049649B - Volute viscous flow device with deflector - Google Patents
Volute viscous flow device with deflector Download PDFInfo
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- CN106049649B CN106049649B CN201610605430.5A CN201610605430A CN106049649B CN 106049649 B CN106049649 B CN 106049649B CN 201610605430 A CN201610605430 A CN 201610605430A CN 106049649 B CN106049649 B CN 106049649B
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- volute
- deflector
- flow device
- viscous flow
- plate
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/041—Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
- E03F5/106—Passive flow control devices, i.e. not moving during flow regulation
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a kind of volute viscous flow device with deflector.Mainly by deflector, ring flat-plate, meet water surface cover and backwater surface cover is formed, volute viscous flow device ring flat-plate upper limb inwall is provided with deflector, and gap is provided between deflector and ring flat-plate lower edge, to promote vortex to be formed, strengthens restriction effect, reduces delivery port flow；Vertical range between deflector lower end and volute viscous flow device bottom is more than the vertical range between ring flat-plate lower end and volute viscous flow device bottom；Deflector is one section of circular curve, and the circular segment where volute viscous flow device ring flat-plate on circle is formed around axle dextrorotation gyration where the marginal point of volute viscous flow device ring flat-plate horizontal diameter.The present invention promotes the formation of vortex, enhances the flow restriction function of delivery port, reduces delivery port flow, reaches the target alleviated or mitigate city low lying areas waterlogging；The true form and area of discharge pipe line keep constant, reduce the risk of pipeline obstruction.
Description
Technical field
The present invention relates to a kind of volute viscous flow device, more particularly, to a kind of volute viscous flow device with deflector.
Technical background
In sewerage system, the physical features difference of different zones, the draining of respective regions drainage pipeline is significantly affected
Ability and the drainage effect in heavy showers.It is relevant theoretical according to hydrodynamics, under head pressure effect, the water in pipeline
Stream flow increases with the rise of head pressure.So when each discharge pipe line is same caliber, high elevation region due to compared with
High head pressure, pipeline has more powerful drainability, and in short-term during heavy showers, surface rain is imported after sump by draining
Pipeline is quickly drained；And hypsography low-lying area head pressure is low, pipeline drainability is relatively weak, rainwater be difficult to drain in time and
It is a large amount of to be detained.Urban drainage pipe network layout in China's is mostly " linker " pattern (i.e. in city some areas, high and low physical features at present
The drainage pipeline networks in region shares same main line), when rainfall exceedes the load of drainage pipeline networks, rainwater is from hypsography low-lying region collection
Well is excessive, causes effectiveness factors.On the other hand, surface rain is under gravity from high elevation field flow orientation low-lying district
Domain, the burden of low lying areas drainage pipeline networks is aggravated, increase the occurrence probability of low lying areas effectiveness factors.
In summary, when city meets with heavy showers in short-term, the draining burden that hypsography low-lying region pipe network faces is higher than highland
Gesture region, and drainability is weaker than high elevation region.This hull-borne of underground pipe network is extremely to alleviating urban waterlogging
Unfavorable.Under the conditions of unchanged pipe network is descended, the appropriate drainability for weakening high elevation region, make hypsography low-lying region preferential
Discharge is to change an effective way of this hull-borne.
The content of the invention
In order to overcome the local waterlogging problem that city heavy showers triggers in background technology, object of the present invention is to provide
A kind of volute viscous flow device with deflector, in the sump higher installed in physical features, under conditions of unchanged pipe network is descended,
The appropriate drainability for slowing down or reducing high elevation region, makes the rainwater in hypsography low-lying region preferentially discharge.
The technical solution adopted by the present invention is：
The volute viscous flow device of the present invention includes ring flat-plate, the surface cover that meets water, backwater surface cover and deflector, and volute viscous flow device enters
Ring flat-plate inside wall edge above mouthful is provided with the deflector to central protuberance, and deflector is fixed on ring flat-plate.
Described deflector extends to volute viscous flow device inner bottom part center, and gap is provided between deflector and ring flat-plate lower end,
Strengthen restriction effect to promote generation vortex, reduce delivery port flow.
Described deflector upper end connects with ring flat-plate, is not connected between deflector lower end and ring flat-plate lower end, has gap.
Described deflector upper end and the junction of ring flat-plate are located at the edge of volute viscous flow device ring flat-plate horizontal diameter.
Vertical range h1 between described deflector lower end and volute viscous flow device inner bottom surface is more than ring flat-plate lower end and volute
Vertical range h2 between viscous flow device inner bottom surface.The range difference is h1-h2, relative size 0.05-0.1R, wherein, R is snail
Shape viscous flow device ring flat-plate inner circle radius.
Described deflector is one section of circular curve, and the circular segment where volute viscous flow device ring flat-plate on circle is around volute
The angle [alpha]s that turn clockwise of axle L where the marginal point P of viscous flow device ring flat-plate horizontal diameter are formed.
Described angle [alpha] is 14~16 degree.
Described volute viscous flow device inlet -duct area A1 is more than discharge area A2, and both ratios are less than 1.04.
The operation principle of the present invention：
Volute viscous flow device with deflector involved in the present invention is installed in the sump of municipal drainage pipeline.Its work
It is as follows to make process：
1st, when influent side is in low water level, the volute viscous flow device with deflector is stagnant by volute equivalent to macroporous plate
The current flowing of stream device is stable, turbulent flow very little inside its device and in outlet pipe, and now water can run through dress
Put and drain.
2nd, when influent side water level is begun to ramp up, vortex, whirlpool now are produced inside the volute viscous flow device with deflector
Flow also unstable, " generation-collapse-generation " process being constantly vortexed.
3rd, as water level continues to rise, structure design shape that the volute viscous flow device with deflector passes through the details such as deflector
Into stable vortex, stable air compression strap (or vacuum belt) is produced, limits the flow of delivery port, now, volute remains in a standstill
Device is equivalent to aperture plate.
4th, with the decline of influent side water level, the helical flow form of current fades away in outlet conduit, but in device
Portion is still full of water, until water level decreasing is pumped into large quantity of air to water inlet flush position, moment, water installations water level inside is rapid
Influent side water level is dropped to, now volute viscous flow device returns to the working condition of macroporous plate again.
Beneficial effects of the present invention：
The present invention is the volute viscous flow device with deflector, promotes vortex to produce, and forms more stable vortex, generates
Stable air compression strap (or vacuum belt), limit the flow of delivery port.
The present invention utilizes fluid mechanics knowledge, when fluid motion produces vortex, reduces the actual excessively stream of hydraulic pipeline
Area, but the true form of discharge pipe line and area keep constant, reduce the risk of pipeline obstruction.
The present invention be free of movable part, it is not required that outside offer power source, during applied to urban drainage pipe network system,
Without carrying out secondary excavation to Urban Buried Pipeline Network, the drainage efficiency in hypsography low-lying area can be effectively improved, to reduce low-lying land
The waterlogging in area.
The present invention can design each volute according to the distribution situation of urban area subdrainage pipe network system, topography and geomorphology
The structure and performance parameters of viscous flow device, really realize the orderly draining of the region subdrainage pipe network system, reach elimination or
Mitigate the target of city low lying areas waterlogging.
Brief description of the drawings
Fig. 1 a are the volute viscous flow device two dimension front views with deflector involved in the present invention.
Fig. 1 b are the volute viscous flow device graphics with deflector involved in the present invention.
Fig. 2 a are the volute viscous flow device two dimension front views for being not added with deflector.
Fig. 2 b are the volute viscous flow device graphics for being not added with deflector.
Fig. 3 is to whether there is deflector volute viscous flow device characteristic working curve comparison diagram.
Fig. 4 a are another band deflector volute viscous flow device two dimension front views.
Fig. 4 b are another band deflector volute viscous flow device graphics.
Fig. 5 is the volute viscous flow device working characteristics comparison diagram of two kinds of deflector forms of Fig. 1 and Fig. 4.
Fig. 6 a are existing volute viscous flow device I two dimension front views.
Fig. 6 b are existing volute viscous flow device I graphics.
Fig. 7 is of the invention and existing volute viscous flow device I characteristic working curve comparison diagrams.
Fig. 8 a are existing volute viscous flow device II two dimension front views.
Fig. 8 b are existing volute viscous flow device II graphics.
Fig. 9 is of the invention and existing volute viscous flow device II characteristic working curve comparison diagrams.
Figure 10 is deflector of the present invention characteristic working curve figure under different rotary angle.
Figure 11 be the present invention it is different disengaging open areas than when volute viscous flow device characteristic working curve figure.
In figure：1- deflectors, 2- ring flat-plates, 3- meet water surface cover, 4- backwater surface covers.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiments of the invention are as follows：
Embodiment 1
The present embodiment is as shown in figure 1, the upper limb inwall of the inner side of volute viscous flow device ring flat-plate 2 is provided with deflector 1, on deflector 1
End and ring flat-plate connect at L, and its junction is located at the edge of the horizontal diameter of volute viscous flow device ring flat-plate 2, the lower end of deflector 1 and ring
Plate 2 is not connected between lower end, has gap.Deflector 1 is fixed on ring flat-plate 2.
Deflector 1 is one section of circular curve, and the circular segment where volute viscous flow device ring flat-plate 2 on circle remains in a standstill along volute
The angle [alpha] degree that turns clockwise of the axle L of axial direction where the marginal point P of the horizontal diameter of device ring flat-plate 2 is formed.
Vertical range h1 between the lower end of deflector 1 and volute viscous flow device inner bottom surface is h1=0.7-0.9R, and R is that volute is stagnant
Flow device ring flat-plate inner circle radius, the vertical range h2 between the lower end of ring flat-plate 2 and volute viscous flow device inner bottom surface；Volute viscous flow device inlet face
Product A1 is more than discharge area A2, and both ratios are less than 1.04.
The present embodiment volute viscous flow device (reference examples 1) of the prior art for being not added with deflector as shown in Figure 2 is carried out pair
Than being not added with the volute viscous flow device of deflector, ring plate shape is identical with Fig. 1.Both characteristic working curves are as shown in figure 3, in figure
Abscissa represents the flow of volute viscous flow device outlet side, and ordinate represents the head of volute viscous flow device entrance side in figure.Can in figure
See, turning left for the present embodiment is a little turned left a little in (43,0.9) in (30,1.0), reference examples 1, it can be seen that the present embodiment has
More preferable restriction effect, restriction effect lifting 36.1% of the present embodiment compared to reference examples 1 after experiment is implemented.
Embodiment 2
The present embodiment is as shown in figure 1, same as Example 1.
The axle L of the circular segment of deflector 1 axial direction where the marginal point P of the horizontal diameter of volute viscous flow device ring flat-plate 2 is suitable
Hour hands rotate three angles and test three characteristic working curves for obtaining throttling, α 1=13 degree, α 2=15 degree, α 3=successively respectively
18 degree.
It can be seen from fig. 10 that the volute viscous flow device in 14~16 degree of angular ranges has preferable restriction effect.
Embodiment 3
The present embodiment is as shown in figure 1, same as Example 1.
For the ratio range A1 between inlet -duct area A1 and discharge area A2:Distinguish value and carry out in A2=1.03~1.06
Experiment, successively experiment obtain a plurality of characteristic working curve of throttling.It can be seen from fig. 11 that it is less than in the disengaging open area ratio
1.04 volute viscous flow device has preferable restriction effect.
Embodiment 4
The present embodiment is as shown in figure 1, same as Example 1.The present embodiment and the volute viscous flow device (reference examples shown in Fig. 6
2) contrasted.
Shown in Fig. 6, the volute viscous flow device ring flat-plate water entering surfaces of reference examples 2 is also arc surface, the volute viscous flow device of reference examples 2 with
The volute viscous flow device difference of the present invention is that for reference examples 2 without the deflector of protrusion, ring flat-plate water entering surface is continuous circular arc
Face.
Both characteristic working curve is as shown in fig. 7, the present embodiment is turned left a little on (30,1.0), a left side for reference examples in figure
Flex point is in (37,0.9), it can be seen that the present embodiment adds the volute viscous flow utensil of deflector to have more preferable restriction effect, and experiment is in fact
Apply restriction effect lifting 25% of the rear the present embodiment compared to reference examples 2.
Embodiment 5
The present embodiment is as shown in figure 1, same as Example 1.The present embodiment and the volute viscous flow device (reference examples shown in Fig. 8
3) contrasted.
Shown in Fig. 8, the volute viscous flow devices of reference examples 3 is the volute viscous flow device that ring flat-plate lower end progressively thickeies, the ring of reference examples 3
Inner surface circle where ring flat-plate in plate lower end continues one section of circular arc of extension and formed, and ring flat-plate lower end outer surface is that straight vertical plane is formed, and is
Solid.
Both characteristic working curve is as shown in figure 9, the present embodiment is turned left a little on (30,1.0), a left side for reference examples in figure
Flex point is in (34,1.1), it can be seen that volute viscous flow utensil of the present embodiment with deflector has more preferable restriction effect, and experiment is in fact
Apply restriction effect lifting 14.3% of the rear the present embodiment compared to reference examples 3.
Embodiment 6
The present embodiment is as shown in figure 1, same as Example 1.The present embodiment and the volute viscous flow device (reference examples shown in Fig. 4
4) contrasted.
Shown in Fig. 4, the volute viscous flow device of reference examples 4 carries deflector, the volute viscous flow device of reference examples 4 and the snail of the present invention
The difference of shape viscous flow device is, very close to each other between deflector and ring flat-plate lower end, is directly filled with solid.
Both characteristic working curve as shown in figure 5, the present embodiment is turned left a little at (30,1.0) place in figure, reference examples
Turn left a little at (36,0.9) place, it can be seen that the present embodiment has more preferable restriction effect, and the present embodiment is compared after experiment implementation
The restriction effect lifting 18.9% of reference examples 4.
Thus above-described embodiment is visible, and the design of special construction of the present invention can promote vortex to be formed, and enhance delivery port
Flow restriction function, delivery port flow is reduced, reach the target alleviated or mitigate city low lying areas waterlogging, reduce pipe
The risk of road obstruction, its obvious technical effects protrude.
Claims (5)
1. a kind of volute viscous flow device with deflector, including ring flat-plate (2), the surface cover that meets water (3) and backwater surface cover (4), its
It is characterised by：Also include deflector (1), ring flat-plate (2) inside wall edge of described volute viscous flow device entrance top is provided with to center
Raised deflector (1), deflector (1) are fixed on ring flat-plate (2)；
Described deflector (1) extends to volute viscous flow device inner bottom part center, is provided between deflector (1) and ring flat-plate (2) lower end
Gap, strengthen restriction effect to promote generation vortex, reduce delivery port flow；
Described deflector (1) is one section of circular curve, and the circular segment where volute viscous flow device ring flat-plate (2) on circle is around snail
The angle [alpha]s that turn clockwise of axle L where the marginal point P of shape viscous flow device ring flat-plate (2) horizontal diameter are formed；
Described volute viscous flow device inlet -duct area A1 is more than discharge area A2, and both ratios are less than 1.04.
A kind of 2. volute viscous flow device with deflector according to claim 1, it is characterised in that：Described deflector
(1) upper end and ring flat-plate (2) connection, have gap between deflector (1) lower end and ring flat-plate (2) lower end.
A kind of 3. volute viscous flow device with deflector according to claim 1 or 2, it is characterised in that：Described water conservancy diversion
Plate (1) upper end and the junction of ring flat-plate (2) are located at the edge of volute viscous flow device ring flat-plate (2) horizontal diameter.
A kind of 4. volute viscous flow device with deflector according to claim 1, it is characterised in that：Described deflector
(1) the vertical range h1 between lower end and volute viscous flow device inner bottom surface be more than ring flat-plate (2) lower end and volute viscous flow device inner bottom surface it
Between vertical range h2.
A kind of 5. volute viscous flow device with deflector according to claim 1, it is characterised in that：Described angle [alpha] is
14~16 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605430.5A CN106049649B (en) | 2016-07-27 | 2016-07-27 | Volute viscous flow device with deflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605430.5A CN106049649B (en) | 2016-07-27 | 2016-07-27 | Volute viscous flow device with deflector |
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| Publication Number | Publication Date |
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| CN106049649A CN106049649A (en) | 2016-10-26 |
| CN106049649B true CN106049649B (en) | 2018-01-12 |
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| CN201610605430.5A Active CN106049649B (en) | 2016-07-27 | 2016-07-27 | Volute viscous flow device with deflector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237396B (en) * | 2017-06-03 | 2022-10-04 | 水利部产品质量标准研究所 | Volute flow-stagnating device with air storage area |
| GB2581496B (en) * | 2019-02-19 | 2021-05-05 | Hydro Int Ltd | A drainage system |
| CN113431164B (en) * | 2021-07-01 | 2022-03-11 | 四川大学 | Flow state self-adaptive vertical surface connection flow guide structure for conversion of falling flow and rotational flow vertical shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2267976A (en) * | 1992-06-11 | 1993-12-22 | Hydro Int Ltd | Vortex valve flow control |
| GB2409537B (en) * | 2002-02-27 | 2006-02-08 | Hydro Int Plc | A vortex valve |
| DK200601583A (en) * | 2006-12-01 | 2008-06-02 | Mosbaek As | Swirl brake for a drainage system |
| DK176654B1 (en) * | 2007-05-11 | 2009-02-02 | Mosbaek As | A vortex brake |
| GB2486989B (en) * | 2007-07-26 | 2012-09-19 | Hydro Int Plc | A vortex flow control device |
| GB2504528B (en) * | 2012-08-02 | 2016-09-07 | Hydro Int Plc | Method of configuring a vortex flow control device and a vortex flow control device |
| CN104358304A (en) * | 2014-10-13 | 2015-02-18 | 水利部产品质量标准研究所 | Volute device for realizing orderly water drainage and waterlogging prevention in cities |
| CN206052919U (en) * | 2016-07-27 | 2017-03-29 | 水利部产品质量标准研究所 | A kind of volute viscous flow device with deflector |
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