CN105862688A - Streamline slope water diversion type water inlet - Google Patents
Streamline slope water diversion type water inlet Download PDFInfo
- Publication number
- CN105862688A CN105862688A CN201610349716.1A CN201610349716A CN105862688A CN 105862688 A CN105862688 A CN 105862688A CN 201610349716 A CN201610349716 A CN 201610349716A CN 105862688 A CN105862688 A CN 105862688A
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- CN
- China
- Prior art keywords
- slope
- water inlet
- circular arc
- inlet
- transition
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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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
-
- 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
Abstract
Disclosed is a streamline slope water diversion type water inlet. The streamline slope water diversion type water inlet is of a wide flat horn-mouth reinforced concrete structure and is composed of an inlet gradual-changing segment, an inner gradual-changing segment and a connecting segment; the water inlet is characterized in that the inlet periphery and the inner wall are in a streamline, that is, lines of the inlet periphery and the inner wall are smooth and flow lines, the connecting segment is arranged to be the slope, the inlet end is in a rectangular shape, and the tail end is in a round shape; circular arc R1 transition is adopted in the connecting position of a side wall and an inlet bottom plate and the connecting position of the side wall and the inner wall of a top plate, and the circular arc is tangent with the straight line connecting position; circular arc R2 transition is adopted at the connecting position of the inner gradually-changing segment and the inner wall of the connecting segment, and the circular arc is tangent with the straight line connecting position; the slope ratio of the connecting segment is 1/1.8-2.2; and compared with a straight water inlet, the electricity using amount of the same pump output is reduced, and the efficiency of a pump station device is improved by 5.2% to 7.8%.
Description
Technical field
The invention belongs to the Design of The Hydraulic Structure technical field of Hydraulic and Hydro-Power Engineering, be specifically related to streamlined slope water channeling type water inlet.
Background technology
Water inlet is one of important component part of slope water channeling type pumping plant, and the Inlet flow pattern of water inlet is the most important factor affecting pump station device efficiency.Small pumping station generally uses water inlet steel pipe horn mouth the most tiltedly to stretch in front water at present, or uses easy reinforced concrete linear type water inlet；Large pumping station the most generally uses reinforced concrete linear type water inlet to join vertical trash rack.
The weak point that existing design exists is: owing to using linear type design, in water inlet, all there is angle all straight line junctions, abutment wall is then wedge angle with import base plate, the inwall junction of top board, angle and wedge angle become the bluff body hindering current, Inlet flow pattern is made to be deteriorated, current form disorderly (rapid) stream, and the resistance that turbulent flow produces reduces pump station device efficiency.
Summary of the invention
It is an object of the invention to use airflow design, the lines in water inlet are become round and smooth and smooth lines, eliminate the angle in water inlet and wedge angle, solution Inlet flow pattern is poor, current are become laminar flow by turbulent flow, reduce resistance to water-flow, thus improve pump station device efficiency.
To achieve these goals, the present invention adopts the following technical scheme that
Streamlined slope water channeling type water inlet is wide flat bell mouth shape reinforced concrete structure, it is made up of inlet transition 10, internal transition 11 and linkage section 12, its feature is: import periphery and inwall are set to streamlined, i.e. the lines of import periphery and inwall are round and smooth and smooth lines；Linkage section 12 is set to a slope.
The feature of the present invention also resides in:
Entrance point is rectangle, and end is circular.
Abutment wall 8 uses circular arc R 1 transition with import base plate 7, top board 9 inwall junction, and circular arc is tangent with straight line connecting place.
Abutment wall 8, face, top board 9 outer use circular arc R 3 transition with inwall junction, and circular arc is tangent with straight line connecting place.
Internal transition 11 and linkage section 12 inwall junction use circular arc R 2 transition, and circular arc is tangent with straight line connecting place.
Linkage section 12 slope is 1.8～2.2 than for 1:m, m value scope, preferred value m=2.
The Advantageous Effects of the present invention is embodied in following aspect:
1) present invention uses airflow design, lines in water inlet are become round and smooth and smooth lines, eliminate the angle in water inlet and wedge angle, solution Inlet flow pattern is poor, reduce resistance to water-flow, compared with linear type water inlet, identical pump-out power consumption declines, and pump station device efficiency improves 5.2%～7.8%.
2) owing to using airflow design, without angle and wedge angle in water inlet, ramp type trash rack has been laid again, it is simple to remove contamination.
Accompanying drawing explanation
Fig. 1 is water inlet longitudinal section of the present invention
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the left side view of Fig. 1；
Fig. 4 is B-B profile；
Fig. 5 is C-C profile
Fig. 6 is D-D profile；
Sequence number in figure: 1 horizontal rubber fastening band, 2 forebay base plates, 3 vertical rubber fastening bands, 4 water inlet inclined tubes, 5 trash rack grooves, 6 trash racks, 7 import base plates, 8 abutment walls, 9 top boards, 10 inlet transitions, 11 internal transition, 12 linkage sections.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by embodiment, the present invention is further described.
Seeing Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is water inlet longitudinal section of the present invention, and Fig. 2 is the top view of Fig. 1, and Fig. 3 is the left side view of Fig. 1.
The streamlined slope water channeling type water inlet of the present invention is wide flat bell mouth shape reinforced concrete structure, it is made up of inlet transition 10, internal transition 11 and linkage section 12, its feature is: import periphery and inwall are set to streamlined, i.e. the lines of import periphery and inwall are round and smooth and smooth lines；Linkage section 12 is set to a slope.
Its feature of the present invention also resides in:
Entrance point is rectangle, and end is circular.
Abutment wall 8 uses circular arc R 1 transition with import base plate 7, top board 9 inwall junction, and circular arc is tangent with straight line connecting place.
Abutment wall 8, face, top board 9 outer use circular arc R 3 transition with inwall junction, and circular arc is tangent with straight line connecting place.
Internal transition 11 and linkage section 12 inwall junction use circular arc R 2 transition, and circular arc is tangent with straight line connecting place.
Linkage section 12 slope is 1.8～2.2 than for 1:m, m value scope, preferred value m=2.
The streamlined slope water channeling type water inlet of the present invention, upstream face tilts backwards, and this kind of pattern is conducive to stablizing of structure.The design of intake parameter: crossing grid current speed is 0.80 ~ 1.0m/s, minimum depth of immersion Y is preferably greater than 1.2 times of water inlet pipe diameters.In order to meet depth of immersion, water inlet is rectangle, and import span width L1 is more than more than 2 times of water inlet pipe diameter, and import clear height H1 is more than 1.25 times of water inlet pipe diameter.Water inlet water level H is greater than minimum depth of immersion Y and import clear height H1 sum.
Seeing Fig. 4, Fig. 4 is B-B profile；Linkage section 12 end is circular, and linkage section 12 must firmly be connected with pumping plant water inlet both inclined tubes 4, air tight.
Seeing Fig. 5, Fig. 5 is C-C profile, and the entrance point of water inlet is rectangle；Abutment wall 8 uses circular arc R 1 transition with import base plate 7, top board 9 inwall junction, and R1 value is 0.3m；The thickness of wall thickness and other structures is not less than 0.3m, and arrangement of reinforcement is by structure and minimum steel ratio.
Seeing Fig. 6, Fig. 6 is D-D profile；The water inlet side that meets water sets trash rack groove 5, and inclination angle is 75.0 °, inside sets steel frame construction trash rack 6, and trash rack 6 is welded by band steel.Abutment wall 8, face, top board 9 outer use circular arc R 3 transition with inwall junction, and R3 value is 0.5m.
Internal transition 11 and linkage section 12 inwall junction use circular arc R 2 transition, and R2 value is 2.0m.
And set horizontal rubber fastening band 1 between forebay base plate 2, between water inlet and two lateral retaining walls, set vertical rubber fastening band 3.
Working procedure:
1) import base plate 7 and the colligation of side patch angle steel muscle, diversion inclined tube 4 is in place, fixing, internal template construct, fixing, pours into a mould import base plate 7；
2) abutment wall 8 and upper patch angle reinforcing bar binding, vertical external mold, abutment wall 8 is poured into a mould；
3) top board 9 reinforcing bar binding, top board 9 is poured into a mould；
4) front wall upper reinforcement colligation, around formwork erection, concrete is poured into a mould.In construction, the lines using template guarantee import periphery and inwall are round and smooth and smooth lines.
Claims (6)
- The most streamlined slope water channeling type water inlet is wide flat bell mouth shape reinforced concrete structure, it is made up of inlet transition (10), internal transition (11) and linkage section (12), it is characterized in that: import periphery and inwall are set to streamlined, i.e. the lines of import periphery and inwall are round and smooth and smooth lines；Linkage section (12) is set to a slope.
- Streamlined slope the most according to claim 1 water channeling type water inlet, is characterized in that: entrance point is rectangle, and end is circular.
- Streamlined slope the most according to claim 1 water channeling type water inlet, is characterized in that: abutment wall (8) uses circular arc R 1 transition with import base plate (7), top board (9) inwall junction, and circular arc is tangent with straight line connecting place.
- Streamlined slope the most according to claim 1 water channeling type water inlet, is characterized in that: abutment wall (8), top board (9) face, outer use circular arc R 3 transition with inwall junction, and circular arc is tangent with straight line connecting place.
- Gradually varied flow line style slope the most according to claim 1 water channeling type water inlet, is characterized in that: internal transition (11) and linkage section (12) inwall junction use circular arc R 2 transition, and circular arc is tangent with straight line connecting place.
- Gradually varied flow line style slope the most according to claim 1 water channeling type water inlet, is characterized in that: linkage section (12) slope is 1.8～2.2 than for 1:m, m value scope, preferred value m=2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610349716.1A CN105862688A (en) | 2016-05-24 | 2016-05-24 | Streamline slope water diversion type water inlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610349716.1A CN105862688A (en) | 2016-05-24 | 2016-05-24 | Streamline slope water diversion type water inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105862688A true CN105862688A (en) | 2016-08-17 |
Family
ID=56635913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610349716.1A Pending CN105862688A (en) | 2016-05-24 | 2016-05-24 | Streamline slope water diversion type water inlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105862688A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56135635A (en) * | 1980-03-21 | 1981-10-23 | Isao Ogata | Concrete block for side-ditch |
| CN204025164U (en) * | 2014-07-30 | 2014-12-17 | 扬州大学 | A kind of elbow inlet passage of hydraulic performance excellence |
| CN204476864U (en) * | 2015-01-21 | 2015-07-15 | 扬州大学 | The serial oblique inlet passage of hydraulic performance excellence |
-
2016
- 2016-05-24 CN CN201610349716.1A patent/CN105862688A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56135635A (en) * | 1980-03-21 | 1981-10-23 | Isao Ogata | Concrete block for side-ditch |
| CN204025164U (en) * | 2014-07-30 | 2014-12-17 | 扬州大学 | A kind of elbow inlet passage of hydraulic performance excellence |
| CN204476864U (en) * | 2015-01-21 | 2015-07-15 | 扬州大学 | The serial oblique inlet passage of hydraulic performance excellence |
Non-Patent Citations (1)
| Title |
|---|
| 石青，杨爱荣等: "《水工建筑物》", 31 May 2014 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |