CN109487896A - Utilize the Forebay of Pumping Station in trigone diversion column control whirlpool - Google Patents
Utilize the Forebay of Pumping Station in trigone diversion column control whirlpool Download PDFInfo
- Publication number
- CN109487896A CN109487896A CN201811437089.2A CN201811437089A CN109487896A CN 109487896 A CN109487896 A CN 109487896A CN 201811437089 A CN201811437089 A CN 201811437089A CN 109487896 A CN109487896 A CN 109487896A
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- China
- Prior art keywords
- trigone
- forebay
- diversion column
- runner
- lock
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- 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
-
- 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
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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)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Using the Forebay of Pumping Station in trigone diversion column control whirlpool, belong to hydraulic engineering technical field.Including Forebay of Pumping Station, trigone diversion column, sluice lock chamber, lock station dividing pier, trigone diversion column is located in the convolution Forebay of Pumping Station of lock station, and cross-sectional shape is equilateral right angled triangle, and right-angle side a length of b/2, b are intake pool (runner) width.Bias current flow direction, a right-angle side and lock station dividing pier centerline parallel are come in the cross section bevel edge face sluice side of the trigone diversion column, and in addition a right-angle side is normal thereto, and the dividing pier extended line between cross section D point and lock station flushes, apart from lock station dividing pier head b/2.The present invention is suitable for various lock station mating type forebays, and the reflux size and location before capable of improving intake pool (runner) makes water flow is more smooth to enter in runner, the more stable operation of water pump assembly.
Description
Technical field
The present invention relates to a kind of Forebay of Pumping Station using trigone diversion column control whirlpool, belong to field of hydraulic machinery technology, especially
Belong to pump station engineering field.
Background technique
Forebay of Pumping Station is the hydraulic structure for connecting approach channel and water feeding of water pump pond (runner), is provided well for the operation of water pump
Condition.Especially lock station convolution pumping station operation, when sluice is closed, close to the obvious efficiency drop of several water pump assemblies of sluice
Low, the reflux being primarily due in sluice produces influence to flow-shape before intake pool (runner), leads to intake pool (runner)
It is also easy to produce reflux and vortex (as shown in Figure 2) at preceding dividing pier, subsequent intake pool (runner) admission section flow-shape is generated
Larger impact causes water pump to vibrate to cause cavitation, influences water pump assembly safety.Therefore, reduce, eliminate or make recirculating zone
Position transfer guarantees that intake pool (runner) flow-shape is good, and to pump assembly safe operation is guaranteed, improving unit efficiency has weight
Want meaning.
Summary of the invention
The purpose of the present invention is in view of the above shortcomings of the prior art, provide a kind of lock combined for sluice and pumping plant
It stands incorporation engineering forebay water flow controlling scheme, that is, utilizes the Forebay of Pumping Station in trigone diversion column control whirlpool.
Technical scheme is as follows:
Utilize the Forebay of Pumping Station in trigone diversion column control whirlpool, characterized in that including forebay, intake pool runner, sluice, the intake pool
It is equipped with lock station dividing pier between runner and sluice, trigone diversion column is set on front side of the intake pool runner, and trigone diversion column is close
Sluice side；The cross section of the trigone diversion column is isosceles right triangle, wherein a right-angle side is parallel in the dividing pier of lock station
Heart line, center line of another right-angle side perpendicular to lock station dividing pier, the bevel edge face sluice side incoming flow of the isosceles right triangle
Bias current direction.
Further, one of base angle of the isosceles right triangle, corresponding to vertex and lock station dividing pier
Extended line flushes.
Further, a length of b/2 of the waist of the isosceles right triangle, b are the width of intake pool runner.
Further, the trigone diversion column cope level is equal with forebay peak level.
Further, for the trigone diversion column apart from lock station dividing pier b/2, the lock station dividing pier length is 2b.
Beneficial effects of the present invention are as follows:
In the present invention, trigone diversion column in forebay, before intake pool, the position of certain distance in front of intake pool (runner)
It sets, and is flushed with lock station dividing pier extended line.The present invention is suitable for various lock station mating type forebays, can improve intake pool
Reflux size and location before (runner) makes water flow is more smooth to enter in runner, the more stable operation of water pump assembly.
Linkage section of the forebay as approach channel and intake pool (runner), is the important component of pumping plant, is to guarantee water
Intake pool (runner) is flowed into from approach channel with flowing uniform, smooth, creates good hydraulics for water pump operation.The operation of water pump passes through
Improper position generates in the forebay Chang Yinwei reflux and cause to vibrate, cause cavitation, pump efficiency caused to substantially reduce.The present invention
It is to be based on numerical simulation calculation and model test, it is that analysis ratiocination obtains as a result, being conducive to various lock station mating type forward directions water inlets
The rectification of forebay, when sluice side incoming flow is biased to intake pool runner, (its cross section is isosceles right angle trigonometry in trigone diversion column
Shape), bias current flow direction is come in the bevel edge face sluice side of isosceles right triangle, eliminates the formation condition of big recirculating zone, vertically
It is parallel to forebay direction of flow in the right-angle side of interval dividing pier, the right-angle side rear for being parallel to interval dividing pier can generate a little blending
Whirlpool, these are all not enough to generate recirculating zone, and the purpose for being finally reached transfer, eliminating recirculating zone improves pump efficiency, reduce energy
Consumption, technically reliable is easy to implement, has a extensive future, and economic benefit is big.
Detailed description of the invention
Fig. 1 is trigone diversion column in forebay of the present invention regulation reflux figure；
Fig. 1 (a) is partial enlarged view in Fig. 1；
Fig. 2 is background technique Central Plains forebay fluidised form schematic diagram；
Fig. 3 is trigone diversion column front view of the present invention；
Fig. 4 is trigone diversion column side view of the present invention；
Fig. 5 is trigone diversion column top view of the present invention；
Fig. 6 is forebay perspective view of the invention；
Fig. 7 is no trigone diversion column forebay numerical simulation fluidised form (former scheme)；
Fig. 8 is forebay numerical simulation fluidised form (adding trigone diversion column) of the invention；
In figure: 1. trigone diversion columns, 2. gates, 3. intake pools (runner), 4. dividing piers, 5. base slopes, 6. forebays, 7. ailerons, 8. are mixed
Mix whirlpool, 9. big recirculating zones.
Specific embodiment
The present invention is suitable for all kinds of lock station mating type forebays, requires design drawing according to the design.
Using the Forebay of Pumping Station in trigone diversion column control whirlpool, including Forebay of Pumping Station, trigone diversion column, sluice lock chamber, irrigation channel and
Dividing pier between lock station, is equipped with trigone diversion column in Forebay of Pumping Station, and trigone diversion column is located at it of pumping plant intake pool (runner)
Before, flush with lock station dividing pier extended line, cross-sectional shape is isosceles right triangle, 1 cope level of trigone diversion column with most
High water level is equal.
As shown in Figure 1,1 cross section of trigone diversion column is isosceles right triangle CDE, right-angle side a length of b/2, b be into
Pond (runner) width.Trigone diversion column 1 is in 3 front of intake pool (runner), close to 2 side of sluice.1 cross section D of trigone diversion column
Point is flushed with 4 extended line of lock station dividing pier, is intake pool (runner) width apart from 4 head b/2 of lock station dividing pier, b.Trigone diversion column 1
Bias current flow direction is come in bevel edge face sluice 2 side in cross section, a right-angle side CE and 4 centerline parallel of lock station dividing pier, and in addition one
Right-angle side ED is normal thereto, and 4 length of dividing pier is 2b or so.
Trigone diversion column 1 is using cast in situs or precast reinforced concrete structure or metal component.Scene uses and applies under water
Work method carries out formwork erection cast in situs.Prefabricated components on-site assembly, it is ensured that necessary rigidity, the intensity of column, material use reinforcing bar
Concrete or steel plate weldment.
When sluice side incoming flow is biased to intake pool runner, in trigone diversion column (its cross section is isosceles right triangle),
Bias current flow direction is come in the bevel edge face sluice side of isosceles right triangle, eliminates the formation condition of big recirculating zone, perpendicular to
It is parallel to forebay direction of flow every the right-angle side of dividing pier, the right-angle side rear for being parallel to interval dividing pier can generate a little blending whirlpool,
These are all not enough to generate recirculating zone, and it is positive to be conducive to various lock stations mating type for the purpose for being finally reached transfer, eliminating recirculating zone
The rectification of forebay.
Claims (5)
1. a kind of Forebay of Pumping Station using trigone diversion column control whirlpool, characterized in that including forebay (6), intake pool runner (3), water
Lock (2) is equipped with lock station dividing pier (4), trigone water conservancy diversion is arranged on front side of the intake pool runner between the intake pool runner and sluice
Column (1), and trigone diversion column is close to sluice side；The cross section of the trigone diversion column is isosceles right triangle, wherein one straight
The arm of angle is parallel to the center line of lock station dividing pier, center line of another right-angle side perpendicular to lock station dividing pier, the isosceles right angle trigonometry
Bias current flow direction is come in the bevel edge face sluice side of shape.
2. the Forebay of Pumping Station according to claim 1 using trigone diversion column control whirlpool, characterized in that the isosceles right angle three
Angular one of base angle, corresponding to vertex flushed with the extended line of lock station dividing pier.
3. the Forebay of Pumping Station according to claim 1 using trigone diversion column control whirlpool, characterized in that the isosceles right angle three
Angular waist a length of b/2, b are the width of intake pool runner.
4. the Forebay of Pumping Station according to claim 1 using trigone diversion column control whirlpool, characterized in that the trigone diversion column
Cope level is equal with forebay peak level.
5. the Forebay of Pumping Station according to claim 3 using trigone diversion column control whirlpool, characterized in that the trigone diversion column
Apart from lock station dividing pier b/2, the lock station dividing pier length is 2b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437089.2A CN109487896A (en) | 2018-11-28 | 2018-11-28 | Utilize the Forebay of Pumping Station in trigone diversion column control whirlpool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437089.2A CN109487896A (en) | 2018-11-28 | 2018-11-28 | Utilize the Forebay of Pumping Station in trigone diversion column control whirlpool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109487896A true CN109487896A (en) | 2019-03-19 |
Family
ID=65698306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811437089.2A Pending CN109487896A (en) | 2018-11-28 | 2018-11-28 | Utilize the Forebay of Pumping Station in trigone diversion column control whirlpool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109487896A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467296A (en) * | 2022-09-16 | 2022-12-13 | 扬州大学 | Valve adjusting guide wall and design method and operation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014228415A (en) * | 2013-05-23 | 2014-12-08 | 三菱重工業株式会社 | Washing apparatus |
| CN104805797A (en) * | 2015-04-29 | 2015-07-29 | 扬州大学 | Device and method for improving flow pattern of inverted T-shaped dam of pump station front pond |
| CN105697424A (en) * | 2016-01-19 | 2016-06-22 | 江苏大学 | Vortex-preventing device for pump station |
| CN206428676U (en) * | 2017-01-09 | 2017-08-22 | 珠江水利委员会珠江水利科学研究院 | Spillway inlet channel guiding device |
| CN206986860U (en) * | 2017-07-27 | 2018-02-09 | 扬州大学 | A kind of combined type control whirlpool facility for lock station convolution Forebay of Pumping Station |
-
2018
- 2018-11-28 CN CN201811437089.2A patent/CN109487896A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014228415A (en) * | 2013-05-23 | 2014-12-08 | 三菱重工業株式会社 | Washing apparatus |
| CN104805797A (en) * | 2015-04-29 | 2015-07-29 | 扬州大学 | Device and method for improving flow pattern of inverted T-shaped dam of pump station front pond |
| CN105697424A (en) * | 2016-01-19 | 2016-06-22 | 江苏大学 | Vortex-preventing device for pump station |
| CN206428676U (en) * | 2017-01-09 | 2017-08-22 | 珠江水利委员会珠江水利科学研究院 | Spillway inlet channel guiding device |
| CN206986860U (en) * | 2017-07-27 | 2018-02-09 | 扬州大学 | A kind of combined type control whirlpool facility for lock station convolution Forebay of Pumping Station |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467296A (en) * | 2022-09-16 | 2022-12-13 | 扬州大学 | Valve adjusting guide wall and design method and operation method thereof |
| CN115467296B (en) * | 2022-09-16 | 2024-01-05 | 扬州大学 | Valve adjusting guide wall and design method and operation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190319 |
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| RJ01 | Rejection of invention patent application after publication |