CN204512082U - A kind of closed water inlet pool ω rear wall - Google Patents
A kind of closed water inlet pool ω rear wall Download PDFInfo
- Publication number
- CN204512082U CN204512082U CN201520134027.XU CN201520134027U CN204512082U CN 204512082 U CN204512082 U CN 204512082U CN 201520134027 U CN201520134027 U CN 201520134027U CN 204512082 U CN204512082 U CN 204512082U
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- CN
- China
- Prior art keywords
- water inlet
- rear wall
- inlet pool
- closed water
- circular arc
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of closed water inlet pool ω rear wall, belong to closed water inlet pool design field, comprise the water guide cone that the ω type rear wall of closed water inlet pool and water feeding of water pump oviduct and water inlet pool base plate are arranged, it is characterized in that, described ω type rear wall is connected and composed by two circular arc arch faces, the connecting line of two circular arc arch faces connects with horn mouth bottom margin, and the sagitta of circular arc arch face is equal with the radius of the loudspeaker mouth of pipe.The utility model rational in infrastructure simple, manufacture easy, easy to use, by the utility model, effectively can improve the bad fluidised form in closed water inlet pool rear wall place and not bring out new recirculating zone or whirlpool.
Description
Technical field
The utility model relates to a kind of closed water inlet pool ω rear wall, belongs to closed water inlet pool design field.
Background technique
Because closed water inlet pool has pressure ring border, flow velocity is comparatively large, and it is comparatively serious that current produce deflection phenomenon, thus make water inlet pool easily produce recirculating zone near the position of rear wall, cause that current in pond are smooth, cross-sectional flow skewness and horn mouth inlet velocity uneven.Fluidised form disorder can have a strong impact on energy characteristics and the cavitation performance of water pump, but also water pump assembly may be caused to produce vibration.
For improving the fluidised form of closed water inlet pool, the measure adopted at present has: the geometric parameter rationally determining closed water inlet pool, and the fluidised form changing rear wall form and improved forebay by engineering measure is to improve the flow condition of water inlet pool.But the recirculating zone at water inlet pool rear wall place is still problem in the urgent need to address.
Model utility content
The utility model is exactly for above-mentioned the deficiencies in the prior art, provides a kind of and effectively can improve the bad fluidised form in closed water inlet pool rear wall place and not bring out the closed water inlet pool ω rear wall of new recirculating zone or whirlpool.
The technical solution of the utility model is, a kind of closed water inlet pool ω rear wall, comprise the water guide cone that the ω type rear wall of closed water inlet pool and water feeding of water pump oviduct and water inlet pool base plate are arranged, it is characterized in that, described ω type rear wall is connected and composed by two circular arc arch faces, the connecting line of two circular arc arch faces connects with the horn mouth bottom margin of water feeding of water pump oviduct, and the sagitta of circular arc arch face is equal with the radius of the loudspeaker mouth of pipe.
The height of described ω type rear wall is equal with the Sidewall Height of closed water inlet pool.
The radius of described circular arc arch face is greater than the sagitta of circular arc arch face.
The utility model rational in infrastructure simple, manufacture easy, easy to use, pass through the utility model, according to the analysis to closed water inlet pool basic flow pattern, current be enter from surrounding bell-mouthed, when current arrive ω shape rear wall place through horn mouth, current can turn to along both wings, and cross-sectional flow can redistribute.By the rectified action of ω shape rear wall, current are entering horn mouth precursor in evenly and can not in generation recirculating zone, rear wall place.
The object arranging ω shape rear wall is the slough problem occurred for solving closed water inlet pool rear wall place.The shape of rear wall is ω type, is made up of a part for two circles, is is namely connected and composed by two circular arc arch faces, and ω type back wall distance (horn mouth is apart from the distance of rear wall farthest) is 1/2 of horn mouth diameter.ω shape rear wall is established can significantly to improve water inlet pool fluidised form by changing at closed water inlet pool.ω shape rear wall has rectification effect, reduces the scope of rear wall place current recirculation zone, and by rectified action, horn mouth sucks flow velocity and is tending towards even.This practicability new patent is applied to pumping plant construction and upgrading, can effectively improve pumping station operation efficiency, improve pump-unit cavitation performance.
Accompanying drawing explanation
Fig. 1 is 3 dimensional views of whole closed water inlet pool.
Fig. 2 is top plan view of the present utility model.
In figure: 1 ω shape rear wall, 2 water guide cones, 3 closed water inlet pools, 4 gates, 5 horn mouths.
Embodiment
Illustrate that the utility model is described in further detail below in conjunction with accompanying drawing and accompanying drawing.
A kind of closed water inlet pool ω rear wall, comprise the water guide cone 2 that the ω type rear wall 1 of closed water inlet pool 3 and water feeding of water pump oviduct and water inlet pool base plate are arranged, ω type rear wall 1 is connected and composed by two circular arc arch faces, the connecting line of two circular arc arch faces connects with horn mouth 5 bottom margin of water feeding of water pump oviduct, and the sagitta of circular arc arch face is equal with the radius of the loudspeaker mouth of pipe.The height of ω type rear wall 1 is equal with the Sidewall Height of closed water inlet pool 3, and the radius of circular arc arch face is greater than the sagitta of circular arc arch face, and the closed water inlet pool the other end is provided with gate 4.
We can arrange:
Horn mouth diameter is D; Closed water inlet pool width is L; The radius of ω shape rear wall is R.
The ω shape rear wall design parameter of closed water inlet pool: ω shape back wall distance (horn mouth is apart from the distance of ω shape rear wall farthest) is 1/2D, the height of ω shape rear wall is the height of closed water inlet pool, the skene arch radius surface R of ω shape rear wall and home position by pond wide and horn mouth diameter determine
Claims (3)
1. a closed water inlet pool ω rear wall, comprise the water guide cone (2) that the ω type rear wall (1) of closed water inlet pool (3) and water feeding of water pump oviduct and water inlet pool base plate are arranged, it is characterized in that, described ω type rear wall (1) is connected and composed by two circular arc arch faces, the connecting line of two circular arc arch faces connects with horn mouth (5) bottom margin, and the sagitta of circular arc arch face is equal with the radius of the loudspeaker mouth of pipe.
2. one according to claim 1 closed water inlet pool ω rear wall, is characterized in that, the height of described ω type rear wall (1) is equal with the Sidewall Height of closed water inlet pool (3).
3. one according to claim 1 closed water inlet pool ω rear wall, is characterized in that, the radius of described circular arc arch face is greater than the sagitta of circular arc arch face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134027.XU CN204512082U (en) | 2015-03-10 | 2015-03-10 | A kind of closed water inlet pool ω rear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134027.XU CN204512082U (en) | 2015-03-10 | 2015-03-10 | A kind of closed water inlet pool ω rear wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512082U true CN204512082U (en) | 2015-07-29 |
Family
ID=53710064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520134027.XU Expired - Fee Related CN204512082U (en) | 2015-03-10 | 2015-03-10 | A kind of closed water inlet pool ω rear wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204512082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508308A (en) * | 2016-01-28 | 2016-04-20 | 扬州大学 | Novel pumping station water pump beam anti-vortex device and method |
| CN111691367A (en) * | 2020-07-15 | 2020-09-22 | 江苏大学镇江流体工程装备技术研究院 | Dustpan-shaped water inlet flow channel |
-
2015
- 2015-03-10 CN CN201520134027.XU patent/CN204512082U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508308A (en) * | 2016-01-28 | 2016-04-20 | 扬州大学 | Novel pumping station water pump beam anti-vortex device and method |
| CN105508308B (en) * | 2016-01-28 | 2017-10-27 | 扬州大学 | A kind of anti-whirlpool device and method of water pump in pump station beam |
| CN111691367A (en) * | 2020-07-15 | 2020-09-22 | 江苏大学镇江流体工程装备技术研究院 | Dustpan-shaped water inlet flow channel |
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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: 20150729 Termination date: 20180310 |