CN105544475A - Vortex eliminating device and method based on novel fabricated pump station maintenance platforms - Google Patents
Vortex eliminating device and method based on novel fabricated pump station maintenance platforms Download PDFInfo
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- CN105544475A CN105544475A CN201610059107.2A CN201610059107A CN105544475A CN 105544475 A CN105544475 A CN 105544475A CN 201610059107 A CN201610059107 A CN 201610059107A CN 105544475 A CN105544475 A CN 105544475A
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- concrete beam
- water
- inspection platform
- side concrete
- horn mouth
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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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
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a vortex eliminating device and method based on novel fabricated pump station maintenance platforms and belongs to the technical field of hydraulic engineering and municipal engineering. The vortex eliminating device and method based on the novel fabricated pump station maintenance platforms is characterized in that each maintenance platform is composed of a concrete beam on the upstream side, a concrete beam on the side near a water-absorption horn mouth, and a supporting beam; a first rectangular notch is formed above the right side of each concrete beam on the upstream side, and the supporting beams can be placed in the first rectangular notches; a second rectangular notch is formed above the right side of each concrete beam on the side near the water-absorption horn mouth, and supporting beams can also be placed in the second rectangular notches; the two ends of each supporting beam can be supported at the first rectangular notch of the corresponding concrete beam on the upstream side and the second rectangular notch of the corresponding concrete beam on the side near the water-absorption horn mouth in a hung mode. By arranging the novel maintenance platforms in a water pool, it can be guaranteed that the maintenance platforms can be in the working state, a good flow sorting and a good flow passing function can be achieved, poor flow states of the maintenance platforms can be obviously avoided, vortexes are eliminated, and the hydraulic loss is greatly reduced.
Description
Technical field
The present invention relates to a kind of novel fabricated pumping plant inspection platform to disappear whirlpool device and method, belong to hydraulic engineering, municipal engineering technical field.
Background technology
Velocity flow profile in intake pool is uneven, or occurs whirlpool, not only significantly can reduce energy characteristics and the cavitation performance of water pump, but also may cause the vibrations of water pump assembly, even cannot normally work.Only possesses good flow condition guarantee water pump safe and highly efficient operation.Open type intake pool is at home and abroad widely used in Practical Project, so numerous domestic and international experts and scholars have carried out lot of experiments research work to open type intake pool, has obtained much useful achievement, and is applied to engineering practice.In engineering design, often need increase inspection platform in intake pool, so that install and repair apparatus.After arranging inspection platform in intake pool, make in intake pool, to become disorderly complicated; Easily there is transverse axis whirlpool below inspection platform simultaneously, cause horn outlet hydraulic performance to decrease.
For eliminating whirlpool in intake pool, prevent vortex rope from being formed, and improve intake pool fluidised form, existing patent relates to related measure at present: application for a patent for invention 201510153321X proposes in closed intake pool, arrange a 1/4 elliptic cone taper platform immediately below horn mouth, in order to improve bad fluidised form in closed intake pool, improve pump efficiency, eliminate whirlpool, the intake pool included end simultaneously and do not bring out new recirculating zone and whirlpool.But this patent does not relate in intake pool and arranges structure situation, reckons without the elimination of whirlpool around structure.Authorize utility model patent CN201520191918 that rear wall partition wall is set in open type intake pool, effectively can improve the fluidised form at open type intake pool rear wall place, promote the pump sump uniformity, prevent open type intake pool rear wall place from refluxing and vortex rope generation, but this measure only for the generation of the bad fluidised form caused by open type intake pool back wall distance and recirculating zone, does not relate to the elimination of the transverse axis whirlpool around inspection platform.Existing patent spininess, to the generation in water surface whirlpool in intake pool and whirlpool, the attached end, there is no the patent arranging inspection platform counteracting vortex open, and due in current engineering, inspection platform is Integral prefabricated type structure, and block water serious, hydraulic loss is large.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of can assemble and solve that inspection platform blocks water seriously, the disorderly problem of fluidised form in pond, whirlpool device and method of eliminating transverse axis whirlpool under inspection platform and the novel fabricated pumping plant inspection platform not bringing out new recirculating zone or whirlpool disappears.
The object of the present invention is achieved like this, a kind of novel fabricated pumping plant inspection platform disappears whirlpool device, comprise the inspection platform be arranged in intake pool, it is characterized in that: described inspection platform is made up of the side concrete beam that meets water, nearly water suction horn mouth side concrete beam, brace summer; The described upper right side meeting water side concrete beam is provided with the first rectangular indentation can placing brace summer, the upper left side of described nearly water suction horn mouth side concrete beam is provided with the second rectangular indentation can placing brace summer, described brace summer two end supports is at first rectangular indentation of side concrete beam with nearly water suction horn mouth side concrete beam, the second rectangular indentation place of meeting water, and brace summer can hang from the first rectangular indentation, the second rectangular indentation.
Described brace summer is steel plate or concrete slab.
The described side concrete beam that meets water is the streamlined section that two semi arch connects, and wherein arc radius is R1=0.2 ~ 0.4m, R2=1.0 ~ 1.5m; The width B 1 of upper right side rectangular indentation of side concrete beam of meeting water is 20cm, and height H 1 is 25 ~ 35cm.
The width B 2 of described nearly water suction horn mouth side concrete beam is 80 ~ 100cm, and height H 2 is 125 ~ 150cm.
The quantity of described inspection platform is 2 ~ 4.
A kind of novel fabricated pumping plant inspection platform disappears vortex method, and it is characterized in that: comprise the inspection platform be arranged in intake pool, described inspection platform is made up of the side concrete beam that meets water, nearly water suction horn mouth side concrete beam, brace summer; The described upper right side meeting water side concrete beam is provided with the first rectangular indentation can placing brace summer, the upper left side of described nearly water suction horn mouth side concrete beam is provided with the second rectangular indentation can placing brace summer, described brace summer two ends can hang be supported on meet water side concrete beam and nearly water suction horn mouth side concrete beam the first rectangular indentation, the second rectangular indentation place; Inspection platform is placed between the water inlet of intake pool and horn mouth, when current flow to pump sump horn mouth from the influent side of intake pool, current are subject to inspection platform and intercept, the brace summer at inspection platform place is hung the first rectangular indentation, the second rectangular indentation place, without brace summer, water body can flow to horn mouth downwards by the larger space between the side concrete beam that meets water, nearly water suction horn mouth side concrete beam smoothly, serves Prevention and dissipation effect; The side concrete beam that meets water is streamlined structure, and without water caltrop, when water body flows through, current are smooth-going, produces whirlpool after avoiding the side concrete beam that meets water.
Described brace summer is steel plate or concrete slab.
The described side concrete beam that meets water is the streamlined section that two semi arch connects, and wherein arc radius is R1=0.2 ~ 0.4m, R2=1.0 ~ 1.5m; The width B 1 of upper right side rectangular indentation of side concrete beam of meeting water is 20cm, and height H 1 is 25 ~ 35cm.
The width B 2 of described nearly water suction horn mouth side concrete beam is 80 ~ 100cm, and height H 2 is 125 ~ 150cm.
The quantity of described inspection platform is 2 ~ 4.
The present invention rational in infrastructure simple, manufacture easy, easy to use, as in Fig. 1, according to flow State Analysis in pumping plant intake pool, conventional monolithic inspection platform is set in intake pool, when current flow to pump sump horn mouth from influent side, current are subject to inspection platform and intercept, current streamline turbulence, larger recirculating zone is formed below inspection platform, to occur whirlpool time serious, because inspection platform is comparatively near apart from horn mouth, the whirlpool of recirculating zone and generation will enter horn mouth, cause horn mouth to intake uneven, time serious, cause water pump to start.
In order to address this problem, as in Fig. 2, in the present invention, novel fabricated inspection platform is two fixing concrete beams and connects to form, and two fixing concrete beams are respectively the side concrete beam that meets water, nearly water suction horn mouth side concrete beam.
Wherein:
1) the side concrete beam that meets water is the streamlined section that two semi arch connects, wherein arc radius is R1=(0.2 ~ 0.4) m, R2=(1.0 ~ 1.5) m, the meet water upper right side of side concrete beam arranges and can place the first rectangular indentation of brace summer, its first rectangular indentation width B 1=20cm, height H 1=25 ~ 35cm.
2) nearly water suction horn mouth side concrete beam is rectangular band breach section.The horn mouth side concrete beam that wherein closely absorbs water is of a size of width B 2=(80 ~ 100) cm, height H 2=(125 ~ 150) cm, the second rectangular indentation size of nearly water suction horn mouth side concrete beam is identical with first rectangular indentation in the concrete beam upper right corner, side that meets water.
3) 2 ~ 4 pieces of brace summers (steel plate or concrete slab) are arranged in intake pool, the length of brace summer is 150 ~ 200cm, the span L of brace summer is the nearly water suction horn mouth side concrete beam width B 2 that brace summer length adds 2 times, two end supports is at the rectangular indentation place meeting water side concrete beam and nearly horn mouth concrete beam, and brace summer (steel plate or concrete slab) arranges suspension hook to lift by crane.When needing maintenance in intake pool, brace summer (steel plate or concrete slab) lifting is assembled to inspection platform horizontal plane place; When unit normally runs, brace summer (steel plate or concrete slab) is hung intake pool.
4) the side concrete beam that meets water is streamlined structure, without water caltrop, when water body flows through, current are smooth-going, whirlpool is produced after avoiding beam, simultaneously because the brace summer (steel plate or concrete slab) at inspection platform place during unit operation hangs, anhydrous plane structure, namely without brace summer, water body can flow to horn mouth downwards by the larger space of (the side concrete beam that meets water, nearly water suction horn mouth side concrete beam) between two beams smoothly, serves Prevention and dissipation effect.
Beneficial effect:
Can ensure the just place work of inspection platform by arranging assembling Novel maintenance platform at intake pool, can play good rectification and overcurrent effect simultaneously, obviously improve the bad fluidised form of inspection platform when unit operation, eliminate whirlpool, hydraulic loss reduces greatly.This patent is applied to pumping plant construction and upgrading, can effectively improve pumping station operation efficiency, improve pump installation cavitation performance.
To sum up, novel fabricated inspection platform can improve and to arrange in intake pool fluidised form challenge around fluidised form disorderly problem, particularly inspection platform, improve efficiency of pumping station, eliminate inspection platform under transverse axis whirlpool and do not bring out new recirculating zone or whirlpool.
Along with the construction of South-to-North Water Transfer Project and the enforcement of national large pumping station technological transformation, have the intake pool fluidised form of up to a hundred pumping plants to need to improve altogether, therefore this patent can be applied and implement, and obtains larger economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is ordinary rectangular inspection platform fluidised form and structure chart in intake pool.
Fig. 2 is novel fabricated inspection platform structure chart in intake pool under unit maintenance state.
Fig. 3 is novel fabricated inspection platform sectional view.
Novel fabricated inspection platform fluidised form figure when Fig. 4 is unit operation.
In figure: 1 inspection platform, 2 horn mouths, 3 brace summers, 4 meet water side concrete beam, 5 closely water suction horn mouth side concrete beam.
Detailed description of the invention
Illustrate that the present invention is further illustrated below in conjunction with accompanying drawing and accompanying drawing.
A kind of novel fabricated pumping plant inspection platform disappears whirlpool device, and comprise the inspection platform 1 be arranged in intake pool, described inspection platform 1 is made up of the side concrete beam 4 that meets water, nearly water suction horn mouth side concrete beam 5, brace summer 3; The first rectangular indentation can placing brace summer 3 is set in the upper right side of the side concrete beam 4 that meets water, the upper left side of nearly water suction horn mouth side concrete beam 5 arranges the second rectangular indentation can placing brace summer 3, described brace summer 3 two ends can hang be supported on meet water side concrete beam 4 and nearly water suction horn mouth side concrete beam 5 the first rectangular indentation, the second rectangular indentation place.
Wherein, described brace summer 3 is steel plate or concrete slab.The side concrete beam 4 that meets water is the streamlined section that two semi arch connects, and wherein arc radius is R1=0.2 ~ 0.4m, R2=1.0 ~ 1.5m.Meet water the width B 1=20cm of upper right side rectangular indentation of side concrete beam 4, height H 1=25 ~ 35cm.Width B 2=80 ~ the 100cm of described nearly water suction horn mouth side concrete beam 5, height H 2=125 ~ 150cm.
In the present invention, the quantity of inspection platform 1 is 2 ~ 4.
During concrete use, inspection platform 1 is placed between the water inlet of intake pool and horn mouth 2, when current flow to pump sump horn mouth 2 from the influent side of intake pool, current are subject to inspection platform 1 and intercept, during unit operation, the brace summer 3 at inspection platform 1 place is hung, anhydrous plane structure, water body can flow to downwards horn mouth 2 by the larger space between the side concrete beam 4 that meets water, nearly water suction horn mouth side concrete beam 5 smoothly, serves Prevention and dissipation effect; Meet water side concrete beam 4 for streamlined structure, and without water caltrop, when water body flows through, current are smooth-going, produce whirlpool after avoiding the side concrete beam 4 that meets water.
The concrete beam (the side concrete beam 4 that meets water, nearly water suction horn mouth side concrete beam 5) of novel fabricated inspection platform 1 is implemented by cast in situs mode, brace summer 3(steel plate or concrete slab) hang in inspection platform place by lifting appliance.
When needs overhaul, by brace summer 3(steel plate or concrete slab) winch to inspection platform 1 concrete beam (the side concrete beam 4 that meets water, nearly water suction horn mouth side concrete beam 5) rectangular indentation place.During unit operation, by brace summer 3(steel plate or concrete slab) go out intake pool.
Claims (10)
1. a novel fabricated pumping plant inspection platform disappears whirlpool device, comprise the inspection platform (1) be arranged in intake pool, it is characterized in that: described inspection platform (1) is made up of the side concrete beam (4) that meets water, nearly water suction horn mouth side concrete beam (5), brace summer (3); The described upper right side meeting water side concrete beam (4) is provided with the first rectangular indentation can placing brace summer (3), the upper left side of described nearly water suction horn mouth side concrete beam (5) is provided with the second rectangular indentation can placing brace summer (3), first rectangular indentation of described brace summer (3) two end supports in meet water side concrete beam (4) and nearly horn mouth side concrete beam (5) that absorbs water, the second rectangular indentation place, and brace summer (3) can hang from the first rectangular indentation, the second rectangular indentation.
2. require that a kind of novel fabricated pumping plant inspection platform described in 1 disappears whirlpool device, is characterized in that: described brace summer (3) is steel plate or concrete slab according to claim.
3. require that a kind of novel fabricated pumping plant inspection platform described in 1 disappears whirlpool device, is characterized in that according to claim: described in the side concrete beam (4) that meets water be the streamlined section of two semi arch connection, wherein arc radius is R1=0.2 ~ 0.4m, R2=1.0 ~ 1.5m; The width B 1 of upper right side rectangular indentation of side concrete beam (4) of meeting water is 20cm, and height H 1 is 25 ~ 35cm.
4. require that a kind of novel fabricated pumping plant inspection platform described in 1 disappears whirlpool device, is characterized in that: the width B 2 of described nearly water suction horn mouth side concrete beam (5) is 80 ~ 100cm, and height H 2 is 125 ~ 150cm according to claim.
5. require that a kind of novel fabricated pumping plant inspection platform described in 1-4 any one claim disappears whirlpool device, is characterized in that: the quantity of described inspection platform (1) is 2 ~ 4 according to claim.
6. a novel fabricated pumping plant inspection platform disappears vortex method, it is characterized in that: comprise the inspection platform (1) be arranged in intake pool, described inspection platform (1) is made up of the side concrete beam (4) that meets water, nearly water suction horn mouth side concrete beam (5), brace summer (3); The described upper right side meeting water side concrete beam (4) is provided with the first rectangular indentation can placing brace summer (3), the upper left side of described nearly water suction horn mouth side concrete beam (5) is provided with the second rectangular indentation can placing brace summer (3), described brace summer (3) two ends can hang be supported on meet water side concrete beam (4) and nearly water suction horn mouth side concrete beam (5) the first rectangular indentation, the second rectangular indentation place; Inspection platform (1) is placed between the water inlet of intake pool and horn mouth (2), when current flow to pump sump horn mouth (2) from the influent side of intake pool, current are subject to inspection platform (1) and intercept, the brace summer (3) at inspection platform (1) place is hung, anhydrous plane structure, water body can flow to downwards horn mouth (2) by the larger space between the side concrete beam (4) that meets water, nearly water suction horn mouth side concrete beam (5) smoothly, serves Prevention and dissipation effect; The side concrete beam (4) that meets water is streamlined structure, and without water caltrop, when water body flows through, current are smooth-going, avoids the side concrete beam (4) that meets water and produces whirlpool afterwards.
7. require that a kind of novel fabricated pumping plant inspection platform described in 6 disappears vortex method, is characterized in that: described brace summer (3) is steel plate or concrete slab according to claim.
8. require that a kind of novel fabricated pumping plant inspection platform described in 6 disappears vortex method, is characterized in that according to claim: described in the side concrete beam (4) that meets water be the streamlined section of two semi arch connection, wherein arc radius is R1=0.2 ~ 0.4m, R2=1.0 ~ 1.5m; The width B 1 of upper right side rectangular indentation of side concrete beam (4) of meeting water is 20cm, and height H 1 is 25 ~ 35cm.
9. require that a kind of novel fabricated pumping plant inspection platform described in 6 disappears vortex method, is characterized in that: the width B 2 of described nearly water suction horn mouth side concrete beam (5) is 80 ~ 100cm, and height H 2 is 125 ~ 150cm according to claim.
10. require that a kind of novel fabricated pumping plant inspection platform described in 6-9 any one claim disappears vortex method, is characterized in that: the quantity of described inspection platform (1) is 2 ~ 4 according to claim.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059107.2A CN105544475B (en) | 2016-01-28 | 2016-01-28 | A kind of novel fabricated pumping plant inspection platform vortex reducing means and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610059107.2A CN105544475B (en) | 2016-01-28 | 2016-01-28 | A kind of novel fabricated pumping plant inspection platform vortex reducing means and method |
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| CN105544475A true CN105544475A (en) | 2016-05-04 |
| CN105544475B CN105544475B (en) | 2018-01-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1483014A1 (en) * | 1987-01-04 | 1989-05-30 | Ленинградское отделение Всесоюзного проектно-изыскательского и научно-исследовательского института "Гидропроект" им.С.Я.Жука | Energy dissipator of pressure spillway stream |
| CN201003294Y (en) * | 2007-01-12 | 2008-01-09 | 扬州大学 | Pumping station water-reception pool |
| CN203067358U (en) * | 2013-01-24 | 2013-07-17 | 扬州大学 | Novel open-type water pump water inlet pool |
| CN204238189U (en) * | 2014-10-15 | 2015-04-01 | 中国长江三峡集团公司 | Water inlet disappears whirlpool device |
| CN205776110U (en) * | 2016-01-28 | 2016-12-07 | 扬州大学 | A kind of novel fabricated pumping plant inspection platform vortex reducing means |
-
2016
- 2016-01-28 CN CN201610059107.2A patent/CN105544475B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1483014A1 (en) * | 1987-01-04 | 1989-05-30 | Ленинградское отделение Всесоюзного проектно-изыскательского и научно-исследовательского института "Гидропроект" им.С.Я.Жука | Energy dissipator of pressure spillway stream |
| CN201003294Y (en) * | 2007-01-12 | 2008-01-09 | 扬州大学 | Pumping station water-reception pool |
| CN203067358U (en) * | 2013-01-24 | 2013-07-17 | 扬州大学 | Novel open-type water pump water inlet pool |
| CN204238189U (en) * | 2014-10-15 | 2015-04-01 | 中国长江三峡集团公司 | Water inlet disappears whirlpool device |
| CN205776110U (en) * | 2016-01-28 | 2016-12-07 | 扬州大学 | A kind of novel fabricated pumping plant inspection platform vortex reducing means |
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| CN105544475B (en) | 2018-01-19 |
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