CN205742107U - A kind of fish mouth type for Forebay of Pumping Station combines current equalizer - Google Patents
A kind of fish mouth type for Forebay of Pumping Station combines current equalizer Download PDFInfo
- Publication number
- CN205742107U CN205742107U CN201520800503.7U CN201520800503U CN205742107U CN 205742107 U CN205742107 U CN 205742107U CN 201520800503 U CN201520800503 U CN 201520800503U CN 205742107 U CN205742107 U CN 205742107U
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- China
- Prior art keywords
- fish mouth
- current equalizer
- mouth type
- forebay
- type combination
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Abstract
The utility model discloses a kind of fish mouth type for Forebay of Pumping Station and combine current equalizer, by outer outside straight line, fish mouth type combination current equalizer inside inlet culvert, Forebay of Pumping Station, fish mouth type combination current equalizer, the fish mouth type combination streamlined front end of current equalizer, the fish mouth type combination streamlined tail end of current equalizer, fish mouth type combination current equalizer choosing camber line limit, pumping plant intake pool, water pump suction pipe form.The disclosed fish mouth type combination current equalizer for Forebay of Pumping Station of this utility model, streamline build, can lay by code requirement, it was provided with stream fish mouth dexterously, after this device is laid, culvert can be solved well export to the sidewall boundary layer that Forebay of Pumping Station sudden expansion causes and separate, produce the series of problems such as strong vortex movement, large scale sidewall backflow, and device sidepiece, rear portion all will not form new strong whirlpool, ensure that Forebay of Pumping Station current are in the stable state of comparison before entering pumping plant intake pool to greatest extent.
Description
Technical field
This utility model relates to hydraulic engineering technical field, and a kind of fish mouth type for Forebay of Pumping Station combines current-sharing
Device.
Background technology
In water delivery engineering, after open channel diffuser angle of flare is beyond certain limit, sidewall will occur boundary layer separation；Diffusion
Current separate with border and can produce strong vortex movement and the backflow of large scale sidewall, and diffuser current are in the disturbance of whirlpool
Under, maybe can not spread (main flow is placed in the middle, two side refluxs), or make main flow lateral shift (the inclined side of main flow, opposite side refluxes), cause
Diffuser downstream main flow is unstable, and it is properly functioning that strong, the severe fluidised form that refluxes affects engineering.Therefore water delivery open channel diffuser
The Hydraulic Design can not be more than 10o by specification limit, angle of flare, can only meet by lengthening diffuser.Many water delivery open channels or
The changeover portion of tunnel outlet by topographic and geologic condition and under swim across stream condition and limited, often have to use short diffuser length,
The linking form of the big angle of flare of plane.Therefore, seek safe and reliable control leading measure is the important engineering problem being badly in need of solving.Existing
Some methods be in diffuser, add diversion pier, the device such as whirlpool plate, end bank that disappears improves the distribution of diffuser flow rate of water flow, eliminates big
The recirculating zone of area.But can not solve boundary layer separation problem, its build is relatively big to the interference of diffuser current greatly, destroys current
Seriality, causes bigger additional drag, and also can produce new strong whirlpool at diversion pier rear portion, sidepiece.Patented technology
CN 203222785 U, although a kind of Y type diversion pier build for flow type of forebay has reduced, but still can not solve water conservancy diversion
The problem that pier rear portion produces new strong whirlpool.
Utility model content
In order to solve above-mentioned technical problem present in prior art, the utility model discloses a kind of for Forebay of Pumping Station
Fish mouth type combination current equalizer, by inlet culvert, Forebay of Pumping Station, Forebay of Pumping Station fish mouth type combine current equalizer, fish mouth type
The combination streamlined front end of current equalizer, the fish mouth type combination streamlined tail end of current equalizer, fish mouth type combination current equalizer inside straight
Camber line limit, pumping plant intake pool, water pump suction pipe composition is chosen outside outside line limit, fish mouth type combination current equalizer.Described fish mouth type group
Close current equalizer main body to be made up of two, left and right antitrope, arrange in splayed.
Further, straight line position inside described fish mouth type combination current equalizer main body, by code requirement, with the side of stream
To angle (i.e. angle of flare) less than 10o, there is not boundary layer separation inside guarantee fish mouth type current equalizer, do not produce whirlpool, front
Pond uniform fluid flow.
Further, described fish mouth type combination current equalizer main body is fixedly installed on culvert outlet and sudden expansion section junction.
Further, when described Forebay of Pumping Station and culvert outlet can not be arranged symmetrically with, except fish mouth type combines current equalizer
Outside main body is normally arranged, fish mouth can be separated, and optionally arranges multiple in relevant position.
Open channel sudden expansion section fish mouth type current equalizer disclosed in this utility model, streamline build, can be laid by code requirement, ingeniously
It was provided with stream fish mouth wonderfully, and after this device is laid, culvert can be solved well and export to the sidewall that Forebay of Pumping Station sudden expansion causes
Boundary layer separation, produce the series of problems such as strong vortex movement, large scale sidewall backflow, and all will not in device sidepiece, rear portion
Form new strong whirlpool.Limited by factors such as orographic conditions, when Forebay of Pumping Station and culvert outlet can not be arranged symmetrically with, fish
Nozzle type current equalizer can be combined to be arranged, makes forebay current by repeatedly current balance function, the most uniformly, ensures pumping plant to greatest extent
Forebay current are in the stable state of comparison before entering pumping plant intake pool.
Accompanying drawing explanation
Fig. 1 is that a kind of fish mouth type for Forebay of Pumping Station combines current equalizer effect schematic diagram；
Fig. 2 is this device (right side structure) schematic diagram；
Fig. 3 is existing patented technology Y type diversion pier effect schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings utility model is described further.
As shown in Figure 1-2, a kind of open channel sudden expansion section fish mouth type current equalizer of the present utility model, by inlet culvert 1, pumping plant
Forebay 2, the fish mouth type combination current equalizer 3 of Forebay of Pumping Station, the fish mouth type combination streamlined front end of current equalizer 31, the combination of fish mouth type
Outside inside the streamlined tail end of current equalizer 32, fish mouth type combination current equalizer, straight line 33, fish mouth type combine outside current equalizer
Choose camber line limit 34, pumping plant intake pool 4, water pump suction pipe 5 form.Described fish mouth type combination current equalizer main body is right by two, left and right
Claim body composition, arrange in splayed, straight line position inside fish mouth type combination current equalizer main body, by code requirement, and flow
Angular separation (i.e. angle of flare) is less than 10o, there is not boundary layer separation inside guarantee fish mouth type current equalizer, do not produce whirlpool,
Forebay uniform fluid flow.Fish mouth type combination current equalizer main body is fixedly installed on culvert outlet and sudden expansion section junction.Forebay of Pumping Station
When can not be arranged symmetrically with culvert outlet, in addition to fish mouth type combination current equalizer main body is normally arranged, fish mouth can be separated, depending on
Situation is arranged multiple in relevant position.
When open channel sudden expansion section fish mouth type current equalizer disclosed in this utility model uses, entrance sudden expansion is flowed in culvert outlet
Section runs into fish mouth type combination current equalizer main body, is guided sudden expansion section sidewall by camber line limit of choosing outer outside fish mouth type current equalizer, protects
There is not boundary layer separation, produce strong whirlpool in barrier sidewall；Ensure inside fish mouth type current equalizer not by the current of fish mouth
There is boundary layer separation, do not produce whirlpool.Being limited by factors such as orographic conditions, Forebay of Pumping Station can not symmetrical cloth with culvert outlet
When putting, the combination of fish mouth type current equalizer is arranged, in addition to fish mouth type combination current equalizer main body is normally arranged, fish mouth is arranged apart
At the side suitable position that sudden expansion width is big, forebay current can be made by repeatedly current balance function, cross-sectional flow can redistribute,
Gradually uniform, ensure that Forebay of Pumping Station current are in the stable state of comparison before entering pumping plant intake pool to greatest extent.
Claims (3)
1. one kind for Forebay of Pumping Station fish mouth type combination current equalizer be by inlet culvert (1), Forebay of Pumping Station (2), pumping plant before
Fish mouth type combination current equalizer (3) in pond, the fish mouth type combination streamlined front end of current equalizer (31), fish mouth type combination current equalizer
Inside streamlined tail end (32), fish mouth type combination current equalizer, straight line (33), fish mouth type choose arc outside combining outside current equalizer
Line limit (34), pumping plant intake pool (4), water pump suction pipe (5) composition, it is characterised in that: described fish mouth type combination current equalizer master
Body is made up of two, left and right antitrope, arranges in splayed.
A kind of fish mouth type for Forebay of Pumping Station combines current equalizer, it is characterised in that: described fish
Inside nozzle type combination current equalizer main body, straight line position is less than 10 with carrying out flow path direction angleo。
A kind of fish mouth type for Forebay of Pumping Station combines current equalizer, it is characterised in that: described fish
Nozzle type combination current equalizer main body is fixedly installed on culvert outlet and sudden expansion section junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520800503.7U CN205742107U (en) | 2015-10-13 | 2015-10-13 | A kind of fish mouth type for Forebay of Pumping Station combines current equalizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520800503.7U CN205742107U (en) | 2015-10-13 | 2015-10-13 | A kind of fish mouth type for Forebay of Pumping Station combines current equalizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205742107U true CN205742107U (en) | 2016-11-30 |
Family
ID=57388796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520800503.7U Expired - Fee Related CN205742107U (en) | 2015-10-13 | 2015-10-13 | A kind of fish mouth type for Forebay of Pumping Station combines current equalizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205742107U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589671A (en) * | 2018-05-16 | 2018-09-28 | 华北水利水电大学 | Controllable varied angle diversion pier |
| CN111172937A (en) * | 2020-02-23 | 2020-05-19 | 扬州大学 | T-shaped contact bottom hole structure and comprehensive rectification method thereof |
| CN113152360A (en) * | 2021-04-08 | 2021-07-23 | 扬州大学 | Intelligent adjustment and optimization flow guide device for river confluence flow field and application |
-
2015
- 2015-10-13 CN CN201520800503.7U patent/CN205742107U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589671A (en) * | 2018-05-16 | 2018-09-28 | 华北水利水电大学 | Controllable varied angle diversion pier |
| CN111172937A (en) * | 2020-02-23 | 2020-05-19 | 扬州大学 | T-shaped contact bottom hole structure and comprehensive rectification method thereof |
| CN113152360A (en) * | 2021-04-08 | 2021-07-23 | 扬州大学 | Intelligent adjustment and optimization flow guide device for river confluence flow field and application |
| CN113152360B (en) * | 2021-04-08 | 2022-03-11 | 扬州大学 | Intelligent adjustment and optimization flow guide device for river confluence flow field and application |
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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: 20161130 Termination date: 20171013 |