CN204644990U - A kind of vertical shaft energy-dissipating structure - Google Patents
A kind of vertical shaft energy-dissipating structure Download PDFInfo
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- CN204644990U CN204644990U CN201520263296.6U CN201520263296U CN204644990U CN 204644990 U CN204644990 U CN 204644990U CN 201520263296 U CN201520263296 U CN 201520263296U CN 204644990 U CN204644990 U CN 204644990U
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- energy
- vertical shaft
- baffle plate
- dissipating structure
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Abstract
The utility model discloses a kind of vertical shaft energy-dissipating structure, the opposed end of its plate washer relative in both sides is provided with buffle sill upwardly to increase water subfill thickness on baffle plate, certain thickness water subfill can be formed above baffle plate, current spread to surrounding after dropping into the water subfill on baffle plate, and produce rotary roll and shearing, water subfill is thickeied, further raising energy dissipation rate, its flow turbulence is strong, aeration and exhaust are acutely, the energy of current can be dissipated in a large number, the streaming potential fallen all is consumed on every grade of baffle plate, simultaneously, the fluidised form that baffle plate at different levels falls is identical, there is no energy accumulation, in energy dissipation, flow energy classification in vertical shaft is dissipated on each baffle plate, avoid the enormous impact power that concentrated energy dissipating brings, the impact such as large amplitude and high noisy, after setting up water subfill thickness, effect of energy dissipation is better, baffle spacing can be increased under equal design flow condition, reduce baffle number, save the engineering quantity of energy-dissipating structure, and structure is simple, easy construction.
Description
Technical field
The utility model relates to a kind of energy-dissipating structure, and particularly a kind of vertical shaft disappears structure.
Background technology
Vertical shaft energy-dissipating structure is a kind of tunnel formula outlet structure escape works be arranged in hydraulic engineering, traditional vertical shaft energy-dissipating structure adopts spiral-flow type energy-dissipating structure, though this traditional energy-dissipating structure has certain effect of energy dissipation, but can with the phenomenon such as the washing away of high-velocity flow, aeration, cavitation and cavitation erosion, rapid flow shock wave in building when high head and large flow earial drainage, the vibration produced in energy dissipation and noise are comparatively large, and discharge capacity is vulnerable to the restriction of certain condition.
And along with drainning off floodwaters and the construction of municipal wastewater pipe-line system in city, occur that effect of energy dissipation is better, impact little and baffle-type vertical shaft energy-dissipating structure that is low noise, this energy-dissipating structure comprises vertical shaft, discharge opening is arranged at the bottom of vertical shaft, described vertical shaft inside has vertical partition wall that the space at vertical shaft middle and lower part to top is divided into dry district and wet district, shaft top has the inflow entrance flowing into wet district for sluicing, the both sides of the inwall in wet district are provided with multistage relative baffle plate from top to bottom, the relative plate washer in both sides is staggered on vertical direction, vertical partition wall has air vent being positioned at the position below baffle plate.After sluicing current flow into wet district from the inflow entrance of shaft top, can fall step by step on the baffle plate of both sides, form folding reciprocal overall flow-shape.Current drop into surrounding diffusion after the water subfill on baffle plate, and produce rotary roll and shearing, flow turbulence is strong, aeration and exhaust violent, the energy of current is dissipated in a large number.The potential energy that nappe flow increases all consumes on every grade of baffle plate, and the fluidised form that baffle plate at different levels falls is identical, does not have energy accumulation, falls into after the energy dissipating of silo bottom absorption basin flow out vertical shaft reposefully from discharge opening through afterbody baffle plate.In energy dissipation, the flow energy classification in vertical shaft is dissipated on each baffle plate, avoids the impacts such as enormous impact power, large amplitude and the high noisy that concentrated energy dissipating brings, and effect of energy dissipation is better, and structure is simple, easy construction.But this vertical shaft energy-dissipating structure still has weak point: 1, this Energy Dissipation Modes requires higher to vertical shaft diameter and baffle spacing, structural parameters can cause down stream energy dissipating at different levels insufficient when there is deviation, energy accumulation, flow velocity increases gradually, down stream drop point is outer gradually to be moved, thus forming S type sticking wall flow, effect of energy dissipation still cannot meet the requirement of design and operation.2, the vertical shaft diameter of this energy-dissipating structure is comparatively large, and baffle spacing is less, causes baffle dimensions and quantity all larger, still has larger optimization space.
Summary of the invention
The purpose of this utility model is to provide a kind of effect of energy dissipation better vertical shaft energy-dissipating structure, it can not produce the phenomenons such as enormous impact power and high noisy in energy dissipation, and bigger than normal at letdown flow, also can obtain good effect of energy dissipation when vertical shaft diameter is less than normal, baffle spacing is bigger than normal.
A kind of vertical shaft energy-dissipating structure described in the utility model, comprise vertical shaft, discharge opening is arranged at the bottom of vertical shaft, described vertical shaft inside has vertical partition wall that the space at vertical shaft middle and lower part to top is divided into dry district and wet district, shaft top has the inflow entrance flowing into wet district for sluicing, the both sides of the inwall in wet district are provided with multistage relative baffle plate from top to bottom, the relative plate washer in both sides is staggered on vertical direction, vertical partition wall has air vent being positioned at the position below baffle plate, be positioned at high-order baffle plate the sluicing fallen on it can be led relative side low level baffle plate on, the opposed end of the plate washer that both sides are relative is provided with buffle sill upwardly.
Vertical shaft energy-dissipating structure described in the utility model, the both sides of the wet district inwall of its vertical shaft arrange multistage relative baffle plate from top to bottom, the relative plate washer in both sides is staggered on vertical direction, and the opposed end of the relative plate washer in both sides is provided with buffle sill upwardly to increase water subfill thickness on baffle plate.After sluicing current flow into wet district from the inflow entrance of shaft top, can fall step by step on the baffle plate of both sides, form folding reciprocal overall flow-shape.Because baffle plate end is provided with buffle sill, certain thickness water subfill can be formed above baffle plate, current spread to surrounding after dropping into the water subfill on baffle plate, and produce rotary roll and shearing, water subfill is thickeied, further raising energy dissipation rate, its flow turbulence is strong, aeration and exhaust are acutely, the energy of current can be dissipated in a large number, the streaming potential fallen all is consumed on every grade of baffle plate, simultaneously, the fluidised form that baffle plate at different levels falls is identical, there is no energy accumulation, fall into after the energy dissipating of silo bottom absorption basin through afterbody baffle plate and flow out vertical shaft reposefully from discharge opening, complete sluicing energy dissipating work, in energy dissipation, flow energy classification in vertical shaft is dissipated on each baffle plate, avoid the enormous impact power that concentrated energy dissipating brings, the impact such as large amplitude and high noisy, after setting up water subfill thickness, effect of energy dissipation is better, under equal design flow condition, cocoa increases baffle spacing, reduce baffle number, save the engineering quantity of energy-dissipating structure, and structure is simple, easy construction.
Accompanying drawing explanation
Fig. 1 is top view of the present utility model.
Fig. 2 is the sectional view of Fig. 1 along A-A direction.
Fig. 3 is the sectional view of Fig. 1 along B-B direction.
Detailed description of the invention
As shown in Figures 1 to 3, described a kind of vertical shaft energy-dissipating structure, comprise vertical shaft 1, discharge opening 11 is arranged at the bottom of vertical shaft 1, described vertical shaft 1 inside has vertical partition wall 2 that the space at vertical shaft middle and lower part to top is divided into dry district 4 and wet district 3, dry district 4 communicates in the bottom of vertical shaft 1 with wet district 3, dry district 4 is the passage of maintenance and ventilation, wet district 3 is water stream channel, vertical shaft 1 top has the inflow entrance 12 flowing into wet district for sluicing, the inwall both sides in wet district 3 are provided with multistage relative baffle plate 5 from top to bottom, the relative plate washer 5 in both sides is staggered on vertical direction, vertical partition wall 2 has air vent 51 being positioned at the position below baffle plate 5, for the air that current aeration and eliminating depart from from water, the opposed end of the plate washer that both sides are relative is respectively equipped with buffle sill 52 upwardly, to increase water subfill thickness on baffle plate 5, the drain hole 521 running through buffle sill is established bottom buffle sill 52, this drain hole 521 can be rectangle, the shape such as triangle or circle, the ponding on rear eliminating baffle plate 5 is terminated for sluicing, be positioned at high-order baffle plate 5 sluicing fallen on it can be led relative side low level baffle plate on.After sluicing current flow into wet district 3 from the inflow entrance 12 at vertical shaft 1 top, can fall step by step on the baffle plate 5 of both sides, form folding reciprocal overall flow-shape.Because baffle plate 5 end is provided with buffle sill 52, certain thickness water subfill can be formed above baffle plate 5, current spread to surrounding after dropping into the water subfill on baffle plate, and produce rotary roll and shearing, water subfill is thickeied, further raising energy dissipation rate, its flow turbulence is strong, aeration and exhaust are acutely, the energy of current can be dissipated in a large number, the streaming potential fallen all is consumed on every grade of baffle plate 5, simultaneously, the fluidised form that baffle plate at different levels falls is identical, there is no energy accumulation, fall into after the energy dissipating of silo bottom absorption basin through afterbody baffle plate and flow out vertical shaft reposefully from discharge opening 11, complete sluicing energy dissipating work, in energy dissipation, flow energy classification in vertical shaft is dissipated on each baffle plate 5, avoid the enormous impact power that concentrated energy dissipating brings, the impact such as large amplitude and high noisy, after setting up water subfill thickness, effect of energy dissipation is better, under equal design flow condition, cocoa increases baffle spacing, reduce baffle number, save the engineering quantity of energy-dissipating structure, and structure is simple, easy construction.
When the height h of the buffle sill of baffle plate end is 0.2 times of the vertical distance H of the relative plate washer in both sides, its effect of energy dissipation is better.
The design discharge Q of vertical shaft can according to circumstances determine, and works as design discharge
(m
3/ s) time (wherein, D is the diameter of vertical shaft), its effect of energy dissipation is better.
The current inflow direction of inflow entrance 12 is parallel with the surface of vertical partition wall 2, and vertical partition wall 2 is separated into wet district 3 and dry district 4 from centre by vertical shaft 1, and the both sides that vertical shaft 1 arranges baffle plate 5 are on the inflow direction of current.The area sum of two relative baffle plates be staggered 5 is more than or equal to the area of the truncation surface in wet district 3.
Claims (5)
1. a vertical shaft energy-dissipating structure, comprise vertical shaft, discharge opening is arranged at the bottom of vertical shaft, described vertical shaft inside has vertical partition wall that the space at vertical shaft middle and lower part to top is divided into dry district and wet district, shaft top has the inflow entrance flowing into wet district for sluicing, the both sides of the inwall in wet district are provided with multistage relative baffle plate from top to bottom, the relative plate washer in both sides is staggered on vertical direction, vertical partition wall has air vent being positioned at the position below baffle plate, be positioned at high-order baffle plate the sluicing fallen on it can be led relative side low level baffle plate on, it is characterized in that: the opposed end of the plate washer that both sides are relative is provided with buffle sill upwardly.
2. vertical shaft energy-dissipating structure according to claim 1, is characterized in that: be provided with the drain hole running through buffle sill bottom buffle sill.
3. vertical shaft energy-dissipating structure according to claim 2, is characterized in that: this drain hole is rectangle, triangle or circle.
4. vertical shaft energy-dissipating structure according to claim 1, is characterized in that: the height h of the buffle sill of baffle plate end is 0.2 times of the vertical distance H of the relative plate washer in both sides.
5. vertical shaft energy-dissipating structure according to claim 1, is characterized in that: the design discharge of vertical shaft
(m
3/ s), wherein, D is the diameter of vertical shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263296.6U CN204644990U (en) | 2015-04-28 | 2015-04-28 | A kind of vertical shaft energy-dissipating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263296.6U CN204644990U (en) | 2015-04-28 | 2015-04-28 | A kind of vertical shaft energy-dissipating structure |
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| Publication Number | Publication Date |
|---|---|
| CN204644990U true CN204644990U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520263296.6U Expired - Fee Related CN204644990U (en) | 2015-04-28 | 2015-04-28 | A kind of vertical shaft energy-dissipating structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604174A (en) * | 2015-12-19 | 2016-05-25 | 中国水利水电科学研究院 | Annular baffle plate energy dissipation vertical shaft |
| CN110029619A (en) * | 2019-03-13 | 2019-07-19 | 广东省水利水电科学研究院 | It is a kind of for there is the foam inhibition device of down stream flowing line |
-
2015
- 2015-04-28 CN CN201520263296.6U patent/CN204644990U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604174A (en) * | 2015-12-19 | 2016-05-25 | 中国水利水电科学研究院 | Annular baffle plate energy dissipation vertical shaft |
| CN110029619A (en) * | 2019-03-13 | 2019-07-19 | 广东省水利水电科学研究院 | It is a kind of for there is the foam inhibition device of down stream flowing line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160428 |