CN205012296U - A structure of effluenting that is used for high arch dam flood discharge deep hole - Google Patents
A structure of effluenting that is used for high arch dam flood discharge deep hole Download PDFInfo
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- CN205012296U CN205012296U CN201520545775.7U CN201520545775U CN205012296U CN 205012296 U CN205012296 U CN 205012296U CN 201520545775 U CN201520545775 U CN 201520545775U CN 205012296 U CN205012296 U CN 205012296U
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- outlet
- deep hole
- leveled
- lock chamber
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000008602 contraction Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000035755 proliferation Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a structure of effluenting especially discloses a structure of effluenting that is used for high arch dam flood discharge deep hole, belongs to the design of hydraulic and hydroelectric engineering building and builds technical field. The utility model provides an overflow flow state can be effectively improved, a structure of effluenting that is used for high arch dam flood discharge deep hole that the overflow goes out the flowing water wing is reduced in a large number. Effluent the structure including set up being in flood discharge deep hole in the high arch dam dam body with arrange the lock chamber system of flood discharge deep hole downstream side, the flood discharge deep hole pass through the lock chamber system open and close, at the midstream and downstream position tract in the flood discharge deep hole is provided with one section and restraints narrow section along what the water flow direction cross section contract gradually.
Description
Technical field
The utility model relates to one and goes out flow structure, especially relates to a kind ofly going out flow structure for induced joint low-leveled outlet, belongs to Hydraulic and Hydro-Power Engineering Building Design building technology field.
Background technology
Deeply, showing hole overflow aerial collisionless flood-discharge energy-dissipating mode, is a kind of novel flood-discharge energy-dissipating mode that effectively can reduce induced joint flood relief through dam atomization intensity.Its cardinal principle is the horizontal proliferation by restriction table hole and deep hole overflow, thus reaches table hole, deep hole overflow and intert in the air, midair collision does not occur, to reduce the flood-discharge atomizing caused because of overflow midair collision.
For the deep-hole structures of employing table hole, deep hole overflow aerial collisionless flood-discharge energy-dissipating mode, it is major requirement to its structural style that the horizontal proliferation of restriction jet flow is avoided with showing hole overflow generation grazing, realizing that fluid stable reduces unstable water wing thus reduce overflow to exporting washing away of abutment wall.
In order to meet above-mentioned requirements, induced joint low-leveled outlet often adopts outlet gate pier contraction structure build.The architectural feature of this build is: before deep hole outlet sudden expansion, namely deep hole has pressure section both sides abutment wall to be arranged in parallel; Be with no pressure section of deep hole after deep hole outlet sudden expansion, make the gate pier downstream symmetric shrinkage of both sides arrange along runner direction, namely from contraction section starting point, more toward downstream, the lateral separation between the gate pier inwall of both sides is less.The major advantage of this three-dimensional-structure is: because outlet gate pier is arranged in shrinking, outlet overflow due to the effect of contraction transverse beam of gate pier narrow, horizontal spacing between adjacent deep hole overflow is larger, leave the interspersed space of table hole overflow for also comparatively large, table hole, the aerial collisionless requirement of deep hole overflow can be met.The major defect of this three-dimensional-structure is: one be due to before outlet sudden expansion namely deep hole have pressure section both sides abutment wall for being arranged in parallel, so overflow is behind sudden expansion position, overflow still can keep inertia to travel forward, will inevitably with in shrinking the both sides gate pier interfere of arranging, thus evoke large water gaging wing, overflow fluidised form is unstable, and swashing the wing that dabbles also may affect gate structure security of operation; To be that the flow velocity of jet flow is higher reach 30m/s ~ 40m/s usually for next, washes away comparatively serious, may cause the problems such as the cavitation of high-velocity flow, cavitation corrosion to gate pier inwall.
Utility model content
Technical problem to be solved in the utility model is: provide one can effectively improve overflow fluidised form, a large amount of reduce that overflow goes out flowing water wing go out flow structure for induced joint low-leveled outlet.
For solving the problems of the technologies described above adopted technical scheme be: a kind ofly go out flow structure for induced joint low-leveled outlet, comprise the low-leveled outlet be arranged in described induced joint dam body and the lock chamber system being arranged in described low-leveled outlet downstream, described low-leveled outlet is opened and closed by described lock chamber system, and the tract in described low-leveled outlet is provided with one section of narrow section of bundle shunk gradually along water (flow) direction cross section.
The beneficial effects of the utility model are: by being provided with one section of narrow section of bundle shunk gradually along water (flow) direction cross section in the described low-leveled outlet at middle and lower reaches position, owing to namely having pressure section both sides abutment wall to adopt described contraction to arrange at low-leveled outlet before sudden expansion, like this, overflow is behind sudden expansion position, inertia can be kept to be that transverse contraction state travels forward, the overflow form that transverse beam is narrow will inevitably be formed, reach the object effectively improving overflow fluidised form.Meanwhile, because overflow fluidised form is narrow the travelling forward of transverse beam, washing away of the both sides gate pier after overflow and sudden expansion can also be reduced, reach the object effectively reducing flowing water wing; Same, because overflow fluidised form is narrow the travelling forward of transverse beam, the horizontal spacing between adjacent deep hole overflow will become larger, can wear fork provide space for table hole overflow is horizontal.
Further, narrow section of described bundle extends to the low-leveled outlet end before described lock chamber system.
Further, described lock chamber system comprises the integrated gate pier of induced joint dam body with described low-leveled outlet downstream; Two gate piers of same set of described lock chamber system, with the longitudinal center line of described low-leveled outlet for axis of symmetry, the both sides being arranged in described longitudinal center line of this longitudinal center line parallel.
Further, described lock chamber system also comprises gate, and described low-leveled outlet is by described gate opening and closedown.
Further, described gate is Segment gate.
Accompanying drawing explanation
Fig. 1 is that the utility model goes out the cross-sectional schematic of flow structure along water (flow) direction for induced joint low-leveled outlet;
Fig. 2 is the A-A sectional view of Fig. 1.
Be labeled as in figure: induced joint dam body 1, low-leveled outlet 2, lock chamber system 3, restraint narrow section 4, gate pier 5, longitudinal center line 6.
Detailed description of the invention
That the one that the utility model provides can effectively improve overflow fluidised form as shown in Figure 1 and Figure 2, a large amount of reduce that overflow goes out flowing water wing go out flow structure for induced joint low-leveled outlet.Described go out flow structure comprise the lock chamber system 3 being arranged on low-leveled outlet in described induced joint dam body 12 and being arranged in described low-leveled outlet 2 downstream, described low-leveled outlet 2 is opened and closed by described lock chamber system 3, it is characterized in that: the tract in described low-leveled outlet 2 is provided with one section of bundle shunk gradually along water (flow) direction cross section narrow section 4.Above by being provided with one section of bundle shunk gradually along water (flow) direction cross section narrow section 4 in the described low-leveled outlet 2 at middle and lower reaches position, owing to namely having pressure section both sides abutment wall to adopt described contraction to arrange at low-leveled outlet 2 before sudden expansion, like this, overflow is behind sudden expansion position, inertia can be kept to be that transverse contraction state travels forward, the overflow form that transverse beam is narrow will inevitably be formed, reach the object effectively improving overflow fluidised form.Meanwhile, because overflow fluidised form is narrow the travelling forward of transverse beam, washing away of the both sides gate pier 5 after overflow and sudden expansion can also be reduced, reach the object effectively reducing flowing water wing; Same, because overflow fluidised form is narrow the travelling forward of transverse beam, the horizontal spacing between adjacent deep hole overflow will become larger, can wear fork provide space for table hole overflow is horizontal.
In above-mentioned embodiment, gate and the integrated gate pier 5 of induced joint dam body 1 with described low-leveled outlet 2 downstream is comprised in conjunction with existing lock chamber system 3, described low-leveled outlet 2 is by the design feature of described gate opening and closedown, according to flow-shape characteristic, in order to restraint the overflow after narrow sudden expansion to greatest extent, reduce the interference between overflow and gate pier, to reduce the generation of water wing, narrow for described bundle section 4 is extended to low-leveled outlet 2 end before described lock chamber system 3; And by two gate piers 5 of same set of described lock chamber system 3, with the longitudinal center line 6 of described low-leveled outlet 2 for axis of symmetry, be parallel to the both sides being arranged in described longitudinal center line 6 of this longitudinal center line 6.Like this, due to bundle has been extended to the end that namely low-leveled outlet 2 has pressure section for narrow section 4, thus the overflow after narrow sudden expansion can be restrainted to greatest extent.Now, the gate described in the application is Segment gate.
Claims (5)
1. one kind goes out flow structure for induced joint low-leveled outlet, comprise the low-leveled outlet (2) be arranged in described induced joint dam body (1) and the lock chamber system (3) being arranged in described low-leveled outlet (2) downstream, described low-leveled outlet (2) is opened and closed by described lock chamber system (3), it is characterized in that: the tract in described low-leveled outlet (2) is provided with one section of narrow section of bundle (4) shunk gradually along water (flow) direction cross section.
2. according to claim 1ly go out flow structure for induced joint low-leveled outlet, it is characterized in that: narrow section of described bundle (4) extends to low-leveled outlet (2) end before described lock chamber system (3).
3. according to claim 1 and 2ly go out flow structure for induced joint low-leveled outlet, it is characterized in that: described lock chamber system (3) comprises induced joint dam body (1) the integrated gate pier (5) with described low-leveled outlet (2) downstream; The both sides being arranged in corresponding low-leveled outlet (2) longitudinal center line (6) that two gate piers (5) of same set of described lock chamber system (3) are parallel, the gate pier (5) described in two be arranged in parallel with described longitudinal center line (6) for axis of symmetry is arranged symmetrically with.
4. according to claim 3ly go out flow structure for induced joint low-leveled outlet, it is characterized in that: described lock chamber system (3) also comprises gate, and described low-leveled outlet (2) is by described gate opening and closedown.
5. according to claim 4ly go out flow structure for induced joint low-leveled outlet, it is characterized in that: described gate is Segment gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545775.7U CN205012296U (en) | 2015-07-24 | 2015-07-24 | A structure of effluenting that is used for high arch dam flood discharge deep hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545775.7U CN205012296U (en) | 2015-07-24 | 2015-07-24 | A structure of effluenting that is used for high arch dam flood discharge deep hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205012296U true CN205012296U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520545775.7U Active CN205012296U (en) | 2015-07-24 | 2015-07-24 | A structure of effluenting that is used for high arch dam flood discharge deep hole |
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| CN (1) | CN205012296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058421A (en) * | 2020-01-06 | 2020-04-24 | 中国电建集团成都勘测设计研究院有限公司 | Flood discharge structure of high dam body |
-
2015
- 2015-07-24 CN CN201520545775.7U patent/CN205012296U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058421A (en) * | 2020-01-06 | 2020-04-24 | 中国电建集团成都勘测设计研究院有限公司 | Flood discharge structure of high dam body |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |