CN109469156A - A kind of facility improving forebay flow condition - Google Patents
A kind of facility improving forebay flow condition Download PDFInfo
- Publication number
- CN109469156A CN109469156A CN201710830151.3A CN201710830151A CN109469156A CN 109469156 A CN109469156 A CN 109469156A CN 201710830151 A CN201710830151 A CN 201710830151A CN 109469156 A CN109469156 A CN 109469156A
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- forebay
- wall
- reinforced concrete
- sides
- concrete knoll
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
- E03B5/02—Use of pumping plants or installations; Layouts thereof arranged in buildings
- E03B5/025—Use of pumping plants or installations; Layouts thereof arranged in buildings with surface tanks
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
Forebay flow condition has large effect to the flow condition and water pump operation of water pump, in Design of Pump Station, due to being limited by factors such as places, when the shape and size of forebay cannot be designed to ideal shape and size, to guarantee that there are good flow condition and prevention and treatment sediment siltation forebay in forebay, the facility of a kind of improvement forebay flow condition and prevention and treatment sediment siltation is needed.Reinforced concrete knoll wall is set in Forebay of Pumping Station and intake pool, and the reinforced concrete floor of Dun Qiang and wall, forebay and intake pool after armored concrete pour together.Length L of the Dun Qiang in intake pool2It is rectangle in range, two sides are the shape of gradual change in forebay, and the intersection point of the two sides Dun Qiang extended line and the intersection point of forebay two sides extended line are same intersection point, and angle of the two sides Dun Qiang respectively between the two sides of forebay is α.
Description
1. technical field
The present invention relates to a kind of facility for improving forebay flow condition, the flow condition of especially Forebay of Pumping Station is to guarantee water pump
Normally, an important factor for efficient operation, before good Forebay of Pumping Station flow condition is to normal water pump, efficient operation and prevention and treatment is guaranteed
Pond sediment siltation is extremely important.
2. background technique
Pump works is widely used in the neck such as the irrigation by pumping and draining of hydraulic engineering, town water supply engineering and drainage system
Domain.The geometry and size of Forebay of Pumping Station should meet smooth in water flow in pond, and cross-sectional flow is evenly distributed, along pond length direction flow velocity
Change uniform hydraulics, avoids the occurrence of mainstream and take off wall, deviation, reflux and whirlpool.
Forebay flow condition has large effect to the operation of water pump, and the bad flow condition in forebay will feed through to pumping plant
Intake pool makes the water flow disorder in intake pool, water feeding of water pump pipeline import in the whirlpool that forebay is formed with flow direction intake pool
The water-inlet horn saliva stream worsening condition at place, or even air is brought into water pump, the operational efficiency of water pump is reduced, it will when serious
Cause pump cavitation, vibration and noise.
The undesirable flow condition in forebay is also possible to cause forebay sediment siltation, for the water source of high concentration of sediment, in returning for forebay
Area is flowed, since the flow velocity of water flow reduces, so that sediment settlement forms siltation.
By above as can be seen that the flow condition of forebay has biggish shadow to the operation of the flow condition and water pump of water pump
It rings, and the flow condition of forebay depends on the shape and size of forebay.Therefore, in Design of Pump Station, due to by place etc. because
The limitation of element, when the shape and size of forebay cannot be designed to ideal shape and size, to guarantee that there is good water in forebay
Stream condition and prevention and treatment sediment siltation forebay need the facility of a kind of improvement forebay flow condition and prevention and treatment sediment siltation.
3. summary of the invention
The flow condition of forebay has large effect to the operation of the flow condition and water pump of water pump, in Design of Pump Station,
Due to being limited by factors such as places, when the shape and size of forebay cannot be designed to ideal shape and size, before guaranteeing
There are good flow condition and prevention and treatment sediment siltation forebay in pond, needs a kind of improvement forebay flow condition and prevents and treats sediment siltation
Facility.
For the flow condition for improving forebay, reinforced concrete knoll wall (5) are set in Forebay of Pumping Station and intake pool, reinforcing bar is mixed
The reinforced concrete floor of wall (6), forebay (2) and intake pool (3) pours together behind solidifying knoll wall (5) and armored concrete.
Length L of the reinforced concrete knoll wall (5) in intake pool (3)2It is rectangle in range, two sides are the shape of gradual change in forebay (2),
The intersection point of reinforced concrete knoll wall (5) two sides extended line and the intersection point of forebay (2) two sides extended line are same intersection point, reinforcing bar
Angle of the two sides of concrete pier wall (5) respectively between forebay (2) two sides is α.To guarantee the inlet pipeline of each water pump
The water-inlet horn mouth water inlet flow velocity of entrance is evenly distributed, and achievees the purpose that improve forebay flow condition and prevents and treats sediment siltation.
It is detailed in Figure of description 1.
The invention has the advantages that pier wall construction is simple, easy for construction, capital investment is few, improves forebay flow condition
Effect is good, can play the role of preventing and treating sediment siltation for the water source of high concentration of sediment.
4. Detailed description of the invention
Fig. 1 is to improve forebay flow condition facility figure.With reference to the accompanying drawing 1 and embodiment the present invention is further described.
1. water-drawing channel in Fig. 1,2. pumping plant forebays, 3. pumping plant intake pools, 4. water feeding of water pump pipeline import water-inlet horn mouths,
5. reinforced concrete knoll wall, wall after 6. armored concrete intake pools.
5. specific embodiment
Reinforced concrete knoll wall (5) are set in Forebay of Pumping Station and intake pool, reinforced concrete knoll wall (5) and reinforced concrete
The reinforced concrete floor of wall (6), forebay (2) and intake pool (3) pours together after native intake pool.Reinforced concrete knoll wall
(5) in the length L of intake pool (3)2It is rectangle in range, two sides are the shape of gradual change, two sides extended line in forebay (2)
Intersection point and forebay (2) two sides extended line intersection point be same intersection point, the two sides of reinforced concrete knoll wall (5) respectively with it is preceding
Angle between pond (2) two sides is α.To guarantee the water-inlet horn mouth water inlet velocity flow profile of the inlet pipeline entrance of each water pump
Uniformly, achieve the purpose that improve forebay flow condition.
The height of reinforced concrete knoll wall (5) should be higher than that the peak level in forebay (2) and intake pool (3).
Reinforced concrete knoll wall (5) is in intake pool (3) length L2Width in range is b1=0.5m, in forebay (2)
Width is by b1=0.5m gradually fades to b2=0.2m, most head end are semicircle.
Angle of cut α between the extended line of reinforced concrete knoll wall (5) two sides1It is calculated by formula (1)
α in formula1--- the angle of cut of reinforced concrete knoll wall two sides extended line；
α --- effective angle of flare after setting reinforced concrete knoll wall uses water flow critical salinty degree when calculating
19.5°；
αAlways--- the total angle of flare in forebay；
N --- the number of reinforced concrete knoll wall.
Length L of the reinforced concrete knoll wall (5) in forebay (3)3It is calculated by formula (2)
L in formula3--- length of the reinforced concrete knoll wall in forebay, m；
b1--- width of the reinforced concrete knoll wall in intake pool, m；
b2--- the width of reinforced concrete knoll wall head end, m；
α1--- the angle of cut between the extended line of reinforced concrete knoll wall two sides.
Claims (6)
1. a kind of facility for improving forebay flow condition, is arranged reinforced concrete knoll wall (5) in Forebay of Pumping Station and intake pool,
Be characterized in: the reinforcing bar of wall (6), forebay (2) and intake pool (3) is mixed after reinforced concrete knoll wall (5) and armored concrete intake pool
Solidifying soil bottom slab concreting is together.
2. length L of the reinforced concrete knoll wall (5) in intake pool (3) according to claim 12It is rectangle in range, in forebay (2)
Middle two sides are the shape of gradual change, and the intersection point of two sides extended line and the intersection point of forebay (2) two sides extended line are same intersection point.
3. the height of reinforced concrete knoll wall (5) should be higher than that the highest water in forebay (2) and intake pool (3) according to claim 1
Position.
4. according to claim 2 reinforced concrete knoll wall (5) in intake pool (3) length L2Width in range is b1=0.5m,
Width in forebay (2) is by b1=0.5m gradually fades to b2=0.2m, most head end are semicircle.
5. according to the angle of cut α between the extended line of claim 2 reinforced concrete knoll wall (5) two sides1Calculating formula be
α in formula1--- the angle of cut of reinforced concrete knoll wall two sides extended line；
α --- effective angle of flare after setting reinforced concrete knoll wall uses 19.5 ° of water flow critical salinty degree when calculating；
αAlways--- the total angle of flare in forebay；
N --- the number of reinforced concrete knoll wall.
6. according to length L of the claim 2 reinforced concrete knoll wall (5) in forebay (3)3Calculating formula be
L in formula3--- length of the reinforced concrete knoll wall in forebay, m；
b1--- width of the reinforced concrete knoll wall in intake pool, m；
b2--- the width of reinforced concrete knoll wall head end, m；
α1--- the angle of cut between the extended line of reinforced concrete knoll wall two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830151.3A CN109469156A (en) | 2017-09-07 | 2017-09-07 | A kind of facility improving forebay flow condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830151.3A CN109469156A (en) | 2017-09-07 | 2017-09-07 | A kind of facility improving forebay flow condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109469156A true CN109469156A (en) | 2019-03-15 |
Family
ID=65658462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710830151.3A Pending CN109469156A (en) | 2017-09-07 | 2017-09-07 | A kind of facility improving forebay flow condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109469156A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204570820U (en) * | 2015-04-01 | 2015-08-19 | 扬州大学 | Open type intake pool rear wall partition wall disappears whirlpool device |
| CN204570628U (en) * | 2015-03-18 | 2015-08-19 | 扬州大学 | The fairing that a kind of pumping plant is combined |
| CN205399549U (en) * | 2016-02-27 | 2016-07-27 | 江苏建筑职业技术学院 | Intake pool attaches end swirl facility for prevention and control |
| CN105909566A (en) * | 2016-05-17 | 2016-08-31 | 中国农业大学 | Combined type vortex control device for pump station water inlet flow field |
-
2017
- 2017-09-07 CN CN201710830151.3A patent/CN109469156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204570628U (en) * | 2015-03-18 | 2015-08-19 | 扬州大学 | The fairing that a kind of pumping plant is combined |
| CN204570820U (en) * | 2015-04-01 | 2015-08-19 | 扬州大学 | Open type intake pool rear wall partition wall disappears whirlpool device |
| CN205399549U (en) * | 2016-02-27 | 2016-07-27 | 江苏建筑职业技术学院 | Intake pool attaches end swirl facility for prevention and control |
| CN105909566A (en) * | 2016-05-17 | 2016-08-31 | 中国农业大学 | Combined type vortex control device for pump station water inlet flow field |
Non-Patent Citations (1)
| Title |
|---|
| 扬州水利学校主编: "《抽水机与抽水站》", 31 October 1982, 水利出版社 * |
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Application publication date: 20190315 |