CN104879263B - A kind of hydraulic turbine subtract sand erosion device - Google Patents
A kind of hydraulic turbine subtract sand erosion device Download PDFInfo
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- CN104879263B CN104879263B CN201510290367.6A CN201510290367A CN104879263B CN 104879263 B CN104879263 B CN 104879263B CN 201510290367 A CN201510290367 A CN 201510290367A CN 104879263 B CN104879263 B CN 104879263B
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- inlet tube
- sand
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a kind of hydraulic turbine subtract sand erosion device, including upstream pressure steel pipe, downstream pressure steel pipe, base plate, the inlet tube of straight tube structure and the outlet of conical tube structure, the center of the bigger diameter end of outlet is installed with pressure connection tube by polylith bearing rib, inlet tube and pressure connection tube are docked with upstream pressure steel pipe and downstream pressure steel pipe respectively, inlet tube is docked with the miner diameter end of outlet, inlet tube be fixedly installed guide shell centrally through the fixing blade of polylith, the two ends of guide shell are respectively arranged with deflection cone in opposite direction, outlet is arranged on base plate, sand removing hole is provided with base plate, annular space between outlet and pressure connection tube is connected with sand removing hole.The present invention retain original electric power station system constant, intake pressure pipeline installs additional reduce sand erosion device, to enter pressure pipeline water carry out secondary remove sand, reduce band sand the abrasion to rotary wheel of water turbine and flow passage components for the water.
Description
Technical field
The invention belongs to water generating technical field is and in particular to one kind is installed on mitigation on the intake pressure steel pipe of power station
The device of the Sand Erosion on Hydraulic Turbine.
Background technology
In water generating technical field, traditional hydraulic turbine sediment prevention abrasion techniques are setting desiltings before intake pressure steel pipe
Preformed precipitate is carried out in pond.For the power station introducing fully-loaded stream generating power by water current, there is this situation (often in substantially each power station
Always there is flood season in year), before pressure diversion steel pipe, typically build diversion forebay, in diversion forebay, arrange setting pot, setting pot
Need to calculate through detailed, have specific requirement to its length, width and cross-section of river structure；But, power station is typically on mountain
Area, is limited by building the conditions such as geographical position, the arrangement of diversion forebay is more difficult, for as far as possible cost-effective, general diversion
The setting pot in formula power station is all less, and sand setting effect is as one wishes not to the utmost.With the increase of service life, will result in setting pot alluvial, rise
Less than the effect of sand setting, silt enters pressure pipeline together with current, enters the hydroelectric key component hydraulic turbine and turns
Wheel, thus cause to rotary wheel of water turbine and flow passage components to wear and tear.
Content of the invention
The purpose of the present invention is that provides one kind to be installed on power station intake pressure steel pipe to solve the above problems
The upper device mitigating the Sand Erosion on Hydraulic Turbine.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of hydraulic turbine subtract sand erosion device, including upstream pressure steel pipe, downstream pressure steel pipe, base plate, straight tube knot
The inlet tube of structure and the outlet of conical tube structure, the center of the bigger diameter end of described outlet is fixed by polylith bearing rib
Pressure connection tube is installed, described inlet tube and described pressure connection tube are pressed with described upstream pressure steel pipe and described downstream respectively
Power steel pipe docks, and described inlet tube docks with the miner diameter end of described outlet, described inlet tube centrally through the fixing leaf of polylith
Piece is fixedly installed guide shell, and the blade face fixing blade described in polylith is spatial warping structural plane, the two ends of described guide shell
Be respectively arranged with deflection cone in opposite direction, fix described in polylith blade be evenly arranged in described guide shell and described inlet tube it
Between ring space, fix the front of blade described in polylith all towards the clockwise direction centered on described guide shell, two
The center all just to described pressure connection tube for the tap web of described deflection cone, described outlet is arranged on described base plate, described bottom
Sand removing hole is provided with plate, the annular space between described outlet and described pressure connection tube is connected with described sand removing hole.
Further, described pressure connection tube is straight tube structure, every piece of described bearing rib all simultaneously with described outlet
With described press-in connection sealing of tube, bearing rib described in polylith is evenly arranged between described outlet and described pressure connection tube
Ring space.
Further, between described inlet tube and described upstream pressure steel pipe, described pressure connection tube and described downstream pressure
All weld between power steel pipe or be fixedly connected by flange.
Further, described inlet tube and the miner diameter end of described outlet weld.
Further, the centrage of described guide shell, the centrage of described inlet tube, the centrage of described outlet and institute
The centrage stating pressure connection tube overlaps.
Further, every piece of described fixing blade is all simultaneously solid with the inwall of described outlet and the outer wall of described guide shell
Fixed welding.
Further, the center line of described sand removing hole is vertical with described pressure connection tube.
The beneficial effects of the present invention is：
The present invention original electric power station system of reservation is constant, installs the device reducing sand erosion on intake pressure pipeline additional, right
Enter pressure pipeline water carry out secondary remove sand, mitigate band sand the abrasion to rotary wheel of water turbine and flow passage components for the water.
Brief description
Fig. 1 is the cross section structure diagram subtracting sand erosion device of the present invention；
Fig. 2 is the cross section structure diagram of B-B direction in Fig. 1；
Fig. 3 be in Fig. 1 C-C to cross section structure diagram；
Fig. 4 is the mounting structure schematic diagram subtracting sand erosion device of the present invention；
In figure：1- inlet tube, 2- fix blade, 3- outlet, 4- bearing rib, 5- pressure connection tube, 6- deflection cone, 7-
Guide shell, 8- base plate, 9- sand removing hole, 10- upstream pressure steel pipe, 11- downstream pressure steel pipe, 12- subtract sand erosion device.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention include upstream pressure steel pipe 10, downstream pressure steel pipe 11, base plate 8,
The inlet tube 1 of straight tube structure and the outlet 3 of conical tube structure, polylith brace rod is passed through in the center of the bigger diameter end of outlet 3
Plate 4 is installed with pressure connection tube 5, inlet tube 1 and pressure connection tube 5 respectively with upstream pressure steel pipe 10 and downstream pressure steel
Pipe 11 docks, and inlet tube 1 is docked with the miner diameter end of outlet 3, being fixedly installed centrally through the fixing blade 2 of polylith of inlet tube 1
There is guide shell 7, the blade face of the fixing blade 2 of polylith is spatial warping structural plane, and the two ends of guide shell 7 are respectively arranged with direction phase
Anti- deflection cone 6, the fixing blade 2 of polylith is evenly arranged in the ring space between guide shell 7 and inlet tube 1, and polylith fixes leaf
All towards the clockwise direction centered on guide shell 7, the tap web of two deflection cones 6 is all just to pressure connection tube 5 in the front of piece 2
Center, outlet 3 is arranged on base plate 8, and base plate 8 is provided with sand removing hole 9, the ring between outlet 3 and pressure connection tube 5
Shape space is connected with sand removing hole 9.
The hydraulic turbine of the present invention subtract sand erosion device, pressure connection tube 5 be straight tube structure, every piece of bearing rib 4
All weld with outlet 3 and pressure connection tube 5, polylith bearing rib 4 is evenly arranged in outlet 3 and pressure connection tube 5 simultaneously
Between ring space.
All weld or logical between inlet tube 1 and upstream pressure steel pipe 10, between pressure connection tube 5 and downstream pressure steel pipe 11
Cross flange to be fixedly connected, the advantage of flange connection is easy for dismantling and installs, the advantage of welding manner be sound construction and
Seamless exist it is not easy to leak.
Inlet tube 1 is welded with the miner diameter end of outlet 3, in welding it is ensured that inlet tube 1 can be aligned with outlet 3.
The centrage of guide shell 7, the centrage of the centrage of inlet tube 1, the centrage of outlet 3 and pressure connection tube 5
Overlap it is ensured that when flowing through with the current of silt, the centrifugal force centered on their common center line can be produced, be easy to point
From water sand.
Every piece of fixing blade 2 all fixes welding with the inwall of outlet 3 and the outer wall of guide shell 7 simultaneously, and fixing blade 2 is not
But the effect serving water conservancy diversion and separating sand water, and outlet 3 and guide shell 7 can be fixed together.
The center line of sand removing hole 9 is vertical with pressure connection tube 5, under the influence of centrifugal force, silt from pressure connection tube 5 with go out
Outflow is slided in space between mouth pipe 3, just can discharge from sand removing hole 9, and the current removing silt enter around center
Enter pressure connection tube 5, flow into downstream pressure steel pipe 11 afterwards.
The sand erosion device 12 that subtracts of the hydraulic turbine of the present invention is installed on the intake pressure steel pipe of power station, and this device is
The special device mitigating hydraulic turbine abrasion for high concentration of sediment power station developed of my unit.This device has compact conformation, arrangement
Rationally, desanding efficiency is high, operation maintenance is convenient, safe and reliable the features such as, have a wide range of applications in high concentration of sediment power station.
Whole device is installed on diversion pressure steel tube foremost, and using being horizontally mounted, upstream and downstream can be using welding or method
Blue connection.
This device is installed on the intake pressure steel pipe of power station, and all parts have substantially manufactured, have been assembled in place in factory,
Need at the scene to be welded with upstream pressure steel pipe 10 and downstream pressure steel pipe 11 or flange is connected.
This device is using solid-liquid separation principle, because in solid-liquid fluid, solid is different with fluid density, in centrifugation masterpiece
With under, by the solid-liquid fluid-mixing with certain flow rate carry out separate.
The hydraulic turbine of the present invention subtract sand erosion device, inlet tube 1, deflection cone 6, guide shell 7, fixing blade 2, go out
Mouth pipe 3, sand removing hole 9 and pressure connection tube 5 etc. have collectively constituted the separating mechanism of this device, and major function is by the mud in current
Sand is separated, and allows it not enter hydraulic turbine flow channels.Inlet tube 1 is diversion flow passage components, and deflection cone 6 will have a constant current
The current containing sand of speed import fixing blade 2 part, allow current containing sand form rotational flow, and silt are screwed in the inwall of pipeline.
Current containing silt initially enter inlet tube 1, produce centrifugal force, current Midst density is bigger than water in the presence of fixing blade 2
Silt or granule rely on inertia force move out to the wall of this device, sand grain is separated from sand removing hole 9, separate after
Purified water discharge from pressure connection tube 5.
The flowing that this device includes sand current is a kind of extremely complex three-dimensional, two phase flow motion, and the silt of this device divides
From efficiency, depending on the Hydraulic Design of this device, we can carry out numerical simulation using Fluid Mechanics Computation (CFD),
Thus improving silt separation efficiency.Silt after separating is discharged from sand removing hole 9, and the current after purification reenter penstock,
The hydraulic turbine is promoted to generate electricity.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Any modification, equivalent and improvement of being made within principle etc., should be included in protection scope of the present invention.
Claims (7)
1. a kind of hydraulic turbine subtract sand erosion device, including upstream pressure steel pipe and downstream pressure steel pipe it is characterised in that：Also
Including the outlet of base plate, the inlet tube of straight tube structure and conical tube structure, the center of the bigger diameter end of described outlet is passed through
Polylith bearing rib is installed with pressure connection tube, described inlet tube and described pressure connection tube respectively with described upstream pressure
Steel pipe and the docking of described downstream pressure steel pipe, described inlet tube is docked with the miner diameter end of described outlet, in described inlet tube
The heart is fixedly installed guide shell by the fixing blade of polylith, and the blade face fixing blade described in polylith is spatial warping structural plane,
The two ends of described guide shell are respectively arranged with deflection cone in opposite direction, fix blade and be evenly arranged in described water conservancy diversion described in polylith
Ring space between cylinder and described inlet tube, fixes the front of blade all towards centered on described guide shell described in polylith
Clockwise, the center all just to described pressure connection tube for the tap web of two described deflection cones, described outlet is arranged on institute
State on base plate, described base plate is provided with sand removing hole, the annular space between described outlet and described pressure connection tube and institute
State sand removing hole connection.
2. the hydraulic turbine according to claim 1 subtract sand erosion device it is characterised in that：Described pressure connection tube is straight
Tubular construction, every piece of described bearing rib all simultaneously with described outlet and described press-in connection sealing of tube, brace rod described in polylith
Plate is evenly arranged in the ring space between described outlet and described pressure connection tube.
3. the hydraulic turbine according to claim 1 subtract sand erosion device it is characterised in that：Described inlet tube and described on
All weld between trip penstock, between described pressure connection tube and described downstream pressure steel pipe or be fixedly connected by flange.
4. the hydraulic turbine according to claim 1 subtract sand erosion device it is characterised in that：Described inlet tube with described go out
The miner diameter end welding of mouth pipe.
5. the hydraulic turbine according to claim 1 subtract sand erosion device it is characterised in that：The center of described guide shell
Line, the centrage of the centrage of described inlet tube, the centrage of described outlet and described pressure connection tube overlap.
6. the hydraulic turbine according to claim 1 subtract sand erosion device it is characterised in that：Every piece of described fixing blade is equal
Simultaneously with the inwall of described outlet and the fixing welding of the outer wall of described guide shell.
7. the hydraulic turbine according to claim 1 subtract sand erosion device it is characterised in that：The center line of described sand removing hole with
Described pressure connection tube is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510290367.6A CN104879263B (en) | 2015-05-29 | 2015-05-29 | A kind of hydraulic turbine subtract sand erosion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510290367.6A CN104879263B (en) | 2015-05-29 | 2015-05-29 | A kind of hydraulic turbine subtract sand erosion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879263A CN104879263A (en) | 2015-09-02 |
| CN104879263B true CN104879263B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510290367.6A Active CN104879263B (en) | 2015-05-29 | 2015-05-29 | A kind of hydraulic turbine subtract sand erosion device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397334B (en) * | 2018-02-05 | 2020-07-28 | 嘉兴马克机械设备有限公司 | Long service life's hydroelectric power generation equipment that has and prevents that silt from piling up function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2744416Y (en) * | 2004-11-08 | 2005-12-07 | 中国地质大学（武汉） | Hand operated vortex-flow type sand remover |
| CN2912806Y (en) * | 2005-11-08 | 2007-06-20 | 中国科学院力学研究所 | Cyclone sand separator |
| DE202006010272U1 (en) * | 2006-07-03 | 2007-08-23 | Erlach Consult Jec | Pelton turbine with a feed system |
| CN200960480Y (en) * | 2006-09-11 | 2007-10-17 | 北京建筑工程学院 | Crossing-pipe type flow guiding vortex purifier |
| CN204729220U (en) * | 2015-05-29 | 2015-10-28 | 四川省机械研究设计院 | A kind of water turbine subtract sand erosion device |
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Address after: 610000, No. three, 30 South Renmin Road, Chengdu, Sichuan, Wuhou District Patentee after: Sichuan Machinery Research and Design Institute (Group) Co., Ltd Address before: 610000, No. three, 30 South Renmin Road, Chengdu, Sichuan, Wuhou District Patentee before: SICHUAN PROVINCIAL MACHINERY RESEARCH & DESIGN INSTITUTE |
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