CN103290817B - A kind of setting-out corrosion inhibitor structure of outlet structure escape works - Google Patents
A kind of setting-out corrosion inhibitor structure of outlet structure escape works Download PDFInfo
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- CN103290817B CN103290817B CN201310258675.1A CN201310258675A CN103290817B CN 103290817 B CN103290817 B CN 103290817B CN 201310258675 A CN201310258675 A CN 201310258675A CN 103290817 B CN103290817 B CN 103290817B
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Abstract
The setting-out corrosion inhibitor structure of a kind of outlet structure escape works provided by the invention.Described setting-out corrosion inhibitor structure comprises the communicating pipe being embedded in outlet structure escape works inside; The external water compressing equipment of described communicating pipe entrance point; Described communicating pipe, the port of export was communicated with the overcurrent wall of outlet structure escape works; The port of export of communicating pipe is tabular aperture.This setting-out corrosion inhibitor structure can to pressure injection low flow velocity water body bottom the High Velocity Area of overcurrent wall, make between overcurrent wall and high-velocity flow, to form a low flow velocity district, high-velocity flow can not act directly on overcurrent wall, simultaneously high-velocity flow and low flow velocity water body produce shear, blending and Involving velocity, dissipate a large amount of water flow dynamic energy, reduce the bottom velocity of high-velocity flow, suppress flow cavitation, deduction and exemption cavitation erosion and erosion attack.
Description
Technical field
The present invention relates to a kind of setting-out corrosion inhibitor structure of outlet structure escape works, specifically a kind of to pressure injection low flow velocity water body bottom outlet structure escape works high-velocity flow, reduce the bottom velocity of high-velocity flow, suppress flow cavitation, the structure of deduction and exemption cavitation erosion and erosion attack.
Background technology
Under the effect of high-velocity flow, easily there is cavitation erosion and erosion attack in the concrete surface of outlet structure escape works, even brings fatal harm to outlet structure escape works, and cavitation corrosion and erosion attack happen occasionally on outlet structure escape works.
At present, high-velocity flow outlet structure escape works usually arrange air entraining facilities, utilize the effect of dragging of current on air entraining facilities that Air Entrainment is entered water body.Current aeration can block the growth of cavitation bubbles and the process that crumbles and fall effectively, and current aeration can reduce or remit cavitation erosion, but can not reduce or remit erosion attack.Therefore need to design a kind of bottom velocity that can reduce high-velocity flow, suppress flow cavitation, the structure of deduction and exemption cavitation erosion and erosion attack.
Summary of the invention
For air mixing corrosion reducing facility Problems existing and deficiency, the invention provides a kind of active, to the setting-out corrosion inhibitor structure of pressure injection low flow velocity water body bottom high-velocity flow, reduce the bottom velocity of high-velocity flow, suppress flow cavitation, deduction and exemption cavitation erosion and erosion attack.
In order to achieve the above object, technical scheme provided by the invention is:
The setting-out corrosion inhibitor structure of described outlet structure escape works comprises the communicating pipe being embedded in outlet structure escape works inside; The external water compressing equipment of described communicating pipe entrance point; Described communicating pipe, the port of export was communicated with the overcurrent wall of outlet structure escape works; The port of export of communicating pipe is tabular aperture, is preferably flaring tabular aperture.
Wherein, described communicating pipe is steel pipe or concrete reinforced pipe, or other pipelines.Described water compressing equipment is water pump or head-tank, or other can the device of pressure injection current.Described outlet structure escape works are provided with sluice gate, and the opening/closing system of described water compressing equipment and sluice gate links.
Below in conjunction with accompanying drawing and principle, the invention will be further described:
See Fig. 1 and Fig. 2, when sluice gate 9 is opened, current flow through overcurrent wall 7, form high-velocity flow district 5, water compressing equipment 4 by communicating pipe 1 to pressure injection low speed water bottom high-velocity flow district 5, make to form low speed water district 6 bottom high-velocity flow district 5 and between overcurrent wall 7, thus make high-velocity flow can not act directly on overcurrent wall 7; Simultaneously high-velocity flow and low flow velocity water body produce and shear, entrainment and blending effect, dissipate a large amount of water flow dynamic energy, reduce the bottom velocity of high-velocity flow, thus improve flow-shape and the pressure distribution of overcurrent wall, improve the cavitation number of current, suppress flow cavitation, reach the deduction and exemption cavitation erosion of current and the object of erosion attack; Wherein, the speed of the low speed water of pressure injection is much smaller than the speed of high-velocity flow district current.
Accompanying drawing explanation
Fig. 1 is the structural representation of communicating pipe in structure of the present invention;
Fig. 2 is the sectional view of structure of the present invention.
In figure: 1, communicating pipe; 2, the port of export; 3, entrance point; 4, water compressing equipment; 5, High Velocity Area; 6, low flow velocity district; 7, overcurrent wall; 8, outlet structure escape works; 9, sluice gate.
Detailed description of the invention
embodiment 1
See Fig. 1 to Fig. 2, the setting-out corrosion inhibitor structure of described outlet structure escape works comprises the communicating pipe 1 being embedded in outlet structure escape works 8 inside; The external water compressing equipment 4 of described communicating pipe 1 entrance point 3; Described communicating pipe 1, the port of export 2 was communicated with the overcurrent wall 7 of outlet structure escape works 8, and the port of export 2 of communicating pipe 1 is flaring tabular aperture, and described communicating pipe 1 is steel pipe; Described water compressing equipment 4 is water pump.Described outlet structure escape works 8 are provided with sluice gate 9, and described water compressing equipment 4 links with the opening/closing system of sluice gate 9.
The sluicing width of described outlet structure escape works 8 is 5m, and described communicating pipe 1 is steel pipe, and diameter is consistent with the import and export diameter of outer water pump 4, is 650mm; Water pump 4 adopts mixed flow pump, water supply flow 1.0 m
3/ s, lift 5.5m; The described steel pipe port of export 2 shape of cross section is flat rectangle aperture, clear span 5m, clear height 0.2m, aperture exit flow rate of water flow 1.0m/s; Communicating pipe, the port of export was not more than 30m/s with the flow rate of water flow that overcurrent wall is communicated with position.
Claims (6)
1. a setting-out corrosion inhibitor structure for outlet structure escape works, is characterized in that, it comprises the communicating pipe (1) being embedded in outlet structure escape works (8) inside; Entrance point (3) the external water compressing equipment (4) of described communicating pipe (1); The port of export (2) of described communicating pipe (1) is communicated with the overcurrent wall (7) of outlet structure escape works (8), and the port of export (2) of communicating pipe (1) is tabular aperture.
2. setting-out corrosion inhibitor structure as claimed in claim 1, it is characterized in that, the port of export (2) of communicating pipe (1) is flaring tabular aperture.
3. setting-out corrosion inhibitor structure as claimed in claim 1, it is characterized in that, described communicating pipe (1) is steel pipe or concrete reinforced pipe.
4. setting-out corrosion inhibitor structure as claimed in claim 1, it is characterized in that, described water compressing equipment (4) is water pump or head-tank.
5. setting-out corrosion inhibitor structure as claimed in claim 1, it is characterized in that, described outlet structure escape works (8) are provided with sluice gate (9).
6. setting-out corrosion inhibitor structure as claimed in claim 5, is characterized in that, described water compressing equipment (4) links with the opening/closing system of sluice gate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258675.1A CN103290817B (en) | 2013-06-26 | 2013-06-26 | A kind of setting-out corrosion inhibitor structure of outlet structure escape works |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258675.1A CN103290817B (en) | 2013-06-26 | 2013-06-26 | A kind of setting-out corrosion inhibitor structure of outlet structure escape works |
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| Publication Number | Publication Date |
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| CN103290817A CN103290817A (en) | 2013-09-11 |
| CN103290817B true CN103290817B (en) | 2015-09-16 |
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| CN201310258675.1A Active CN103290817B (en) | 2013-06-26 | 2013-06-26 | A kind of setting-out corrosion inhibitor structure of outlet structure escape works |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106192933B (en) * | 2016-07-06 | 2019-04-09 | 中国科学院声学研究所 | A kind of atomising device, device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203307784U (en) * | 2013-06-26 | 2013-11-27 | 中国水电顾问集团中南勘测设计研究院 | Pressurized-water erosion reduction structure of release structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4368121A (en) * | 1979-07-09 | 1983-01-11 | Vasiliev Jury N | Dam spillway |
| RU2131494C1 (en) * | 1995-11-03 | 1999-06-10 | Акционерное общество Красноярский проектно-изыскательский институт "Гидропроект" | Spillway works |
| CN102435414B (en) * | 2011-07-28 | 2014-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Method of decompression test of air entrainment and cavitation alleviation model |
| CN102409653A (en) * | 2011-08-18 | 2012-04-11 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for relieving sill-lifting cavitation of suddenly-enlarged gallery for high-lift ship locks |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203307784U (en) * | 2013-06-26 | 2013-11-27 | 中国水电顾问集团中南勘测设计研究院 | Pressurized-water erosion reduction structure of release structure |
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Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Address before: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant before: HYDROCHINA ZHONGNAN ENGINEERING Corp. Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant after: HYDROCHINA ZHONGNAN ENGINEERING Corp. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Applicant before: Mid-South Hydroelectric Investigation & Design Institute of China Hydropower Engineering Consulting Group |
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Free format text: CORRECT: APPLICANT; FROM: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION TO: CHINA POWER GROUP ZHONGNAN INVESTIGATION DESIGN + RESEARCH INSTITUTE CO., LTD. Free format text: CORRECT: APPLICANT; FROM: ZHONGNAN PROSPECTING DESIGN INST. CHINA HYDRAUELECTRIC CONSULTANT GROUP TO: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION |
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