CN205530621U - Rotatory sluiceway shaft of step - Google Patents
Rotatory sluiceway shaft of step Download PDFInfo
- Publication number
- CN205530621U CN205530621U CN201620104789.XU CN201620104789U CN205530621U CN 205530621 U CN205530621 U CN 205530621U CN 201620104789 U CN201620104789 U CN 201620104789U CN 205530621 U CN205530621 U CN 205530621U
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- CN
- China
- Prior art keywords
- sluiceway
- sluice way
- exhaust passage
- shaft
- vertical shaft
- 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.)
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Abstract
The utility model discloses a rotatory sluiceway shaft of step, rotatory sluiceway shaft of step is that the lower part communicates in the shaft in tunnel and including the exhaust passage, is equipped with the annular sluiceway around the exhaust passage in the outside of exhaust passage, is equipped with the sluicing step around the exhaust passage in annular sluiceway. Under the carminative prerequisite of center -aisle, set up the sluiceway at the shaft wall, the sluiceway is the rotating falling form, overflows the surface for the structure of step at the sluiceway. To the design earial drainage and the drop of difference, utilize the structural style of step, through the triangular space swirl between the step roll soon, the swirl air entrainment and rivers surface from the air entrainment, can carry out the energy dissipation effectively and prevent the cavitation cavitation erosion.
Description
Technical field
This utility model relates to a kind of step in urban water supply and sewerage engineering drainage building and rotates
Sluice way vertical shaft, is mainly used in meeting under conditions of bigger drop and draining discharge, keeps
High energy dissipation rate, the cavitation destruction preventing sluice way from crossing water surface, it is achieved engineering safety is transported
The needs of row.
Background technology
Along with the fast development of Urbanization in China, size of urban population constantly expand and
In the case of being further exacerbated by of Global climate change, extreme weather has become as current China
One of significant challenge that urban development faces.Particularly some heavy showers weather so that city falls into
Entering serious waterlogging, to social management, city produces and life causes tremendous influence.According to firmly building
Portion's special investigation to domestic 351 Urban Waterlogging abilities in 2010 shows, from 2008 to
Between 2010, having the city of 62% that waterlogging in various degree occurred, wherein effectiveness factors surpasses
The city crossing 3 times has 137；In the city that waterlogging occurred, there are 57 cities
The big hydrops time has exceeded 12 hours.Thus, solve urban rainstorm waterlogging and have become as China
The major issue of some Large Cities ' Buildings.Municipal drainage system, it is contemplated that urban development ground
Face certain depth below is the most arranged has buried various facility underground, and the deep heat-extraction system of urban rainwater is urgently sent out
Exhibition.
Vertical shaft is the ingredient that the deep heat-extraction system of urban rainwater is important, in order to be shifted by urban rainwater
In the subterranean tunnel with certain depth, for a drainage by shaft wells system, when a certain amount of
When water body leaks into drainage by shaft wells system, approximately equal amounts of air is had to need to get rid of.Therefore, face
And include that the flow height of water big, upper and lower is big, flow velocity is high, fluidised form is complicated and tunnel aerofluxus etc. is permitted
Many problems.In theory, when the drainage system degree of depth is more than 60m, under let out flow rate of water flow will be super
Crossing 30m/s, energy dissipating and the cavitation and cavitation erosion problem thus brought are inevitable.Therefore study and set
It is the most necessary for counting a kind of shaft structure that can simultaneously meet energy dissipating and the requirement of anti-cavitation cavitation corrosion.
Utility model content
The utility model proposes one can carry out sluicing aerofluxus and can prevent cavitation destruction,
Ensure that the step of high energy dissipation rate rotates sluice way vertical shaft.
This utility model adopts the following technical scheme that
A kind of step rotates sluice way vertical shaft, and it is bottom connection that described step rotates sluice way vertical shaft
Vertical shaft in tunnel and include exhaust passage, is provided around exhaust passage in the outside of exhaust passage
Annular sluice way, in annular sluice way, be provided around the sluicing step of exhaust passage.
Compared with prior art, this utility model has the advantage that
Step described in the utility model rotates sluice way vertical shaft, be in the shaft between logical for aerofluxus
Road, rotates the sluice way declined at Bian Biwei, and the sluice way surface dropped under rotation is Step-edge Junction
Structure.The sluice way of ledge structure, due in the trigonum between step and step whirlpool rotary roll and
Whirlpool air-breathing, consumes big energy, has good effect of energy dissipation；Meanwhile, sluice way surface will
Self aeration occurs, and air mixes water body by water surface, and the whirlpool adding trigonum of topping bar is mixed
Gas, forms the aerated flow of certain aeration concentrater, has good to crossing stream table after current aeration
The anti-cavitation cavitation corrosion protective effect in face.So, this step that the utility model proposes rotates to be let out
Water channel vertical shaft, it is possible to achieve under the conditions of big earial drainage, high drop, the effective energy dissipating of vertical shaft sluice way
Purpose with anti-cavitation cavitation corrosion.Under the middle unimpeded exhaust conditions in exhaust passage, current enter
Vertical shaft tailing edge vertical shaft rotates the step surface declined and crosses stream, i.e. can obtain preferable effect of energy dissipation,
Can there is again the destruction of good anti-cavitation cavitation corrosion.
The step that the utility model proposes rotates sluice way vertical shaft, for the row of municipal drainage system
Water, it is possible to eliminate the energy that relatively mass-flow discharge and drop bring, prevents what high flow rate from causing to let out
Water channel cavitation destruction.The form declined by rotation and the setting of step, relative in structure
The while of simple, it is ensured that high energy dissipation rate, the generation of anti-cavitation cavitation erosion, finally make draining
Structural safety, stable and effect of energy dissipation are protected.
Accompanying drawing explanation
Fig. 1 is that step rotates sluice way vertical shaft top view；
Fig. 2 is that step rotates sluice way vertical shaft sectional view；
The view of step sluice way current flowing when Fig. 3 is little discharge per unit width；
The view of step sluice way current flowing when Fig. 4 is large discharge per unit；
The view of step sluice way current flowing when Fig. 5 is certain middle discharge per unit width；
Detailed description of the invention
A kind of step rotates sluice way vertical shaft, and it is bottom connection that described step rotates sluice way vertical shaft
Vertical shaft in tunnel and include exhaust passage 1, is provided around aerofluxus in the outside of exhaust passage 1
The annular sluice way 2 of passage 1, is provided around letting out of exhaust passage 2 in annular sluice way 2
Water step 21.In the present embodiment, sluicing step 21 helically rises or falls.Sluice way
Wetted surfaces ledge structure, sluice way structural parameters, including sluice way external diameter and internal diameter, base slope,
Step number and step dimension can be selected according to engineering practice；Sluice way is at diverse location
Step, its size can be different；Step sluice way vertical shaft, its vertical shaft can be vertical,
It can also be off plumb；The internal diameter of vertical shaft up and down can be identical, it is also possible to differs；
Step sluice way vertical shaft, its vertical shaft form can be garden, it is also possible to be the shape of other shapes
Formula.
The utility model proposes a kind of step and rotate the version of sluice way vertical shaft, utilize middle
Channel vent, the ledge structure sluice way being fallen fall by rotation crosses water.
Step sluice way crosses water the feature of its uniqueness: when crossing water on step sluice way, work as list
During the water amount difference of bit width, the current on step surface flow in different states.Work as list
When water amount on bit width step is smaller, current flow in falling state (see Fig. 3),
Now, current drop into next step from the end face of a upper step surface, and current are along one, step
A step then step down falls, and current discharge is little, flow velocity is little, gross energy is little, will not
Produce the cavitation and cavitation erosion problem caused due to high flow rate, it is not required that the energy dissipating of other modes,
It is safe for sluice way.When the water amount on unit width step is bigger, current stream
The dynamic line (see dotted line in Fig. 4) in landing state (see Fig. 4), i.e. step top is suitable
In a virtual base plate of current, the direct landing of the current line along top, at two platforms
Current in the delta-shaped region on top, rank form strong whirlpool, and suck air entrance whirlpool,
Meanwhile, on the surface of current due to the effect of the self aeration that flows, enter substantial amounts of air from surface,
Form aerated flow.Thus, having the effect of two aspects, one, at the triangle on step top
In region, due to strong whirlpool rotary roll and aeration, substantial amounts of water energy will be consumed, reach step
Sluice way efficient energy dissipating effect；Its two, due in the trigonum of step the aeration of whirlpool and
The self aeration of water surface, the current crossing step have bigger aeration concentrater, when the aeration of current
Concentration reaches more than 3%, it is possible to be effectively prevented the cavitation destruction of step flow-passing surface,
Play the effect of anti-cavitation cavitation corrosion.When the water amount on unit width step between low discharge with big
Time between flow, current flowing present fall between state and landing state transitive state (see
Fig. 5), now, the current on part step in the trigonum on step top in the state fallen,
Current on part step whirlpool and aeration in the trigonum on step top, and
The surface of current has formed self aeration state, the so current in the trigonum on step top,
If in falling state, its energy is the most relatively small, and if current in trigonum
Form whirlpool, then by whirlpool rotary roll and aeration, have good energy dissipating effect；Furthermore, pass through
The aeration of whirlpool and the aeration on surface, current reach enough aeration concentraters, can protect sluicing
There is not cavitation destruction in road.In general, step sluice way in different flow regimes,
As long as crossing the flow of the unit width of stream less than 60m2/ m.s, effect of energy dissipation can reach 80%
Above, and, under the effect of whirlpool aeration and surface self aeration, it is possible to achieve prevent cavitation
The purpose of cavitation erosion.
The step that the utility model proposes rotates the version of sluice way vertical shaft, i.e. lets out in rotation
The flow surface of water channel vertical shaft arranges the version of step, designs on its sluice way unit width
Flow-control is at 60m3Within/m.s, the current on such step flow-passing surface, at different lists
Bit wide is spent and is flowed down, and has good effect of energy dissipation and the effect of preventing and treating cavitation destruction.
Claims (2)
1. a step rotates sluice way vertical shaft, it is characterized in that, it is that bottom is communicated in the vertical shaft in tunnel and includes exhaust passage (1) that described step rotates sluice way vertical shaft, it is provided around the annular sluice way (2) of exhaust passage (1) in the outside of exhaust passage (1), in annular sluice way (2), is provided around the sluicing step (21) of exhaust passage (1).
Step the most according to claim 1 rotates sluice way vertical shaft, it is characterised in that sluicing step (21) helically rises or falls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620104789.XU CN205530621U (en) | 2016-02-02 | 2016-02-02 | Rotatory sluiceway shaft of step |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620104789.XU CN205530621U (en) | 2016-02-02 | 2016-02-02 | Rotatory sluiceway shaft of step |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530621U true CN205530621U (en) | 2016-08-31 |
Family
ID=56775432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620104789.XU Expired - Fee Related CN205530621U (en) | 2016-02-02 | 2016-02-02 | Rotatory sluiceway shaft of step |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173033A (en) * | 2019-06-06 | 2019-08-27 | 中机中联工程有限公司 | A kind of spiral-flow type drop well |
-
2016
- 2016-02-02 CN CN201620104789.XU patent/CN205530621U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173033A (en) * | 2019-06-06 | 2019-08-27 | 中机中联工程有限公司 | A kind of spiral-flow type drop well |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20200202 |