CN109577292A - A kind of energy dissipating flow passage structure reducing flow velocity - Google Patents

A kind of energy dissipating flow passage structure reducing flow velocity Download PDF

Info

Publication number
CN109577292A
CN109577292A CN201811592428.4A CN201811592428A CN109577292A CN 109577292 A CN109577292 A CN 109577292A CN 201811592428 A CN201811592428 A CN 201811592428A CN 109577292 A CN109577292 A CN 109577292A
Authority
CN
China
Prior art keywords
pipes
analysis
section
energy dissipating
runner hole
Prior art date
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.)
Pending
Application number
CN201811592428.4A
Other languages
Chinese (zh)
Inventor
杨家修
孙卫
杜帅群
陈江
杨萍
湛正刚
郑雪玉
鲍伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PowerChina Guiyang Engineering Corp Ltd
Huaneng Group Technology Innovation Center Co Ltd
Huaneng Lancang River Hydropower Co Ltd
Original Assignee
PowerChina Guiyang Engineering Corp Ltd
Huaneng Group Technology Innovation Center Co Ltd
Huaneng Lancang River Hydropower Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PowerChina Guiyang Engineering Corp Ltd, Huaneng Group Technology Innovation Center Co Ltd, Huaneng Lancang River Hydropower Co Ltd filed Critical PowerChina Guiyang Engineering Corp Ltd
Priority to CN201811592428.4A priority Critical patent/CN109577292A/en
Publication of CN109577292A publication Critical patent/CN109577292A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B8/00Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/06Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B9/00Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • E02B9/02Water-ways
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The invention discloses a kind of energy dissipating flow passage structure for reducing flow velocity, including runner hole, it is provided with pipes' analysis on runner hole, pipes' analysis one end is provided with flow channel entry point, and the pipes' analysis other end is provided with runner exit, is provided with hump weir on pipes' analysis.Using technical solution of the present invention, by the way that multiple hump weirs are arranged on pipes' analysis, these hump weirs have different shapes, height and size, and the arrangement interlaced with each other on pipes' analysis, after allowing fluid flow, keep preferable fluidised form, reduce fluid flow state disorder phenomenon, improve hydraulics, cause flow section sudden contraction sudden expansion further through hump weir simultaneously, increase flow energy loss, reach reduction flow velocity, adjust streamline, the purpose of fluidised form, reduce the probability that fluid generates cavitation erosion in runner hole, the present invention has structure simple, construction is convenient, the advantages such as project cost is low, suitable for the various water discharging structures for needing to carry out energy dissipating processing.

Description

A kind of energy dissipating flow passage structure reducing flow velocity
Technical field
Present invention relates particularly to runner flood discharge and energy dissipation technology field in hydraulic and hydroelectric engineering more particularly to a kind of reduction flow velocitys Energy dissipating flow passage structure.
Background technique
It also should ensure that in addition to it should meet flood carrying capacity in the runtime as runner set in hydraulic and hydroelectric engineering Between flood releasing structure safety, be well connected with former streamflow and due effect of energy dissipation can be given full play to, to avoid under The stream that sluices causes erosion damage to underwater bed and bank slope.Existing spillway energy dissipating design is generally using energy dissipating side other than outlet Formula, the design of spillway barrel energy-dissipating structure gradually develops in recent years, occurs Step Energy Dissipation in succession, and energy dissipating, hollowed-out board are filled in hole Energy dissipating, the various patterns such as ventilation bank energy dissipating, but be all the part eliminated using the suddenly change of flow-passing surface in fluid Energy reduces exit velocity.The all generally existing disadvantage of current existing various barrel energy dissipation types, water flow disappear by barrel Energy working hour fluidised form disorder, flow condition are poor, which is easy to happen cavitation and cavitation erosion problem.Therefore, it is necessary to one kind to disappear The barrel energy-dissipating structure of cavitation and cavitation erosion problem can be can be reduced again, to reduce exit velocity, eliminate part flow energy.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of energy dissipating flow passage structures for reducing flow velocity.
The present invention is achieved by following technical solution.
The present invention provides a kind of energy dissipating flow passage structure for reducing flow velocity, including runner hole, it is arranged on the runner hole There is the pipes' analysis allowed fluid flow, one end of the pipes' analysis is provided with flow channel entry point, and the other end of the pipes' analysis is provided with Runner exit is provided at least one hump weir on the pipes' analysis.
The runner hole cross-sectional outling is non-close or closed, and the pipes' analysis is formed by the runner hole inner wall.
Projection of the pipes' analysis in the runner hole transversal cross-section is open channel section, city-gate section, circle, horse It is one of ungulate.
The multiple hump weir is interrupted along the pipes' analysis length direction by appropriate spacing or continuous arrangement, wherein arbitrarily Projection of two hump weirs on the runner hole cross section is interlaced with each other.
Projection of the hump weir appearance profile on the runner hole cross section includes the arc section A for being located at left side, position Arc section B in the top and arc section C positioned at right side.
Central angle corresponding to the arc section A, arc section C is 0 °~180 °.The corresponding central angle of the arc section C is It is 0 °~180 °.
Projection of the hump weir appearance profile on the runner hole vertical section further include be connected to the arc section A with Between arc section B or the straight line linkage section that is connected between the arc section C and arc section B.
The hump weir height is less than 2/3rds of the pipes' analysis height.
The beneficial effects of the present invention are: technical solution of the present invention is used, by the way that multiple humps are arranged on pipes' analysis Weir, these hump weirs have different shapes, height and size, and the arrangement interlaced with each other on pipes' analysis, allow fluid flow Later, preferable fluidised form is kept, fluid flow state disorder phenomenon is reduced, improves hydraulics, while causing further through hump weir Flow section sudden contraction sudden expansion increases flow energy loss, achievees the purpose that reduce flow velocity, adjustment streamline, fluidised form, reduces fluid and exist The probability of cavitation erosion is generated in runner hole, the present invention has the advantages such as structure is simple, construction is convenient, and project cost is low, Suitable for the various water discharging structures for needing to carry out energy dissipating processing.
Detailed description of the invention
Fig. 1 is longitudinal section structure diagram of first embodiment of the invention;
Fig. 2 is longitudinal section structure diagram of second embodiment of the invention;
Fig. 3 is top view of the invention;
Fig. 4 is runner hole cross-sectional configuration schematic diagram of the present invention;
Fig. 5 is hump weir cross-sectional configuration schematic diagram of the present invention.
In figure: 1- runner hole, 2- hump weir, 11- pipes' analysis, 12- flow channel entry point, 13- runner exit, 21- arc section A, 22- arc section C, 23- arc section B.
Specific embodiment
Technical solution of the present invention is further described with reference to the accompanying drawing, but claimed range is not limited to institute It states.
A kind of energy dissipating flow passage structure of reduction flow velocity of the invention, as shown in Figure 1, Figure 2, Figure 3, Figure 4, including runner hole 1, The pipes' analysis 11 allowed fluid flow is provided on runner hole 1, one end of pipes' analysis 11 is provided with flow channel entry point 12, pipes' analysis 11 The other end be provided with runner exit 13, at least one hump weir 2 is provided on pipes' analysis 11.
Using technical solution of the present invention, by the way that multiple hump weirs are arranged on pipes' analysis, these hump weirs have difference Shape, height and size, and the arrangement interlaced with each other on pipes' analysis after allowing fluid flow, keeps preferable fluidised form, subtracts Few fluid flow state disorder phenomenon improves hydraulics, while causing flow section sudden contraction sudden expansion further through hump weir, increases water flow Energy loss achievees the purpose that reduce flow velocity, adjustment streamline, fluidised form, reduces fluid and generate cavitation erosion in runner hole Probability, the present invention have the advantages such as structure is simple, construction is convenient, and project cost is low, need to carry out energy dissipating suitable for various In the water discharging structure of processing.
Further, 1 cross-sectional outling of runner hole is non-close or closed, and pipes' analysis 11 is formed by 1 inner wall of runner hole. Projection of the pipes' analysis 11 in 1 transversal cross-section of runner hole is one of open channel section, city-gate section, circle, the shape of a hoof. Using technical solution of the present invention, it can be applied to the energy-dissipating structure in the spillway structure of various structure types, be widely used.
In addition, multiple hump weirs 2 are interrupted along 11 length direction of pipes' analysis by appropriate spacing or continuous arrangement, wherein arbitrarily Projection of two hump weirs 2 on 1 cross section of runner hole is interlaced with each other.It is preferred that the spacing between two hump weirs 2 of arbitrary neighborhood It is all different.The overall volume size of any two hump weir 2 is all different.Using technical solution of the present invention, due to hump 2 size of weir, volume are different, and as fluid flows therethrough, the pipes' analysis that fluid flows through then generates fluctuated, wide suddenly narrow change suddenly Change, so that the portion of energy in fluid is promoted to consume, and simultaneously as 2 interlaced arrangement of hump weir, makes fluid flow state will not mistake In disorder, and better orientation consistency is still maintained, improved hydraulics, reduced and cavitation and cavitation erosion phenomenon occurs Probability.
Further, as shown in figure 5, projection of 2 appearance profile of hump weir on 1 cross section of runner hole includes being located at left side Arc section A21, the arc section B23 positioned at top and the arc section C22 positioned at right side.Arc section A21, arc section C22 institute are right The central angle answered is 0 °
~180 °.The corresponding central angle of arc section C22 is 0 °~180 °.2 appearance profile of hump weir is vertical disconnected in runner hole 1 Projection on face further include be connected between arc section A21 and arc section B23 or be connected to arc section C22 and arc section B23 it Between straight line linkage section 24.2 height of hump weir is less than 2/3rds of 11 height of pipes' analysis.Specifically, 2 position of hump weir Any position on pipes' analysis can be located at, the spacing between two hump weirs 2 of arbitrary neighborhood can be equal also not identical.
The technical solution of the application is practiced by Kweiyang Co., Ltd, survey and design research institute, Chinese electric construction group investment, In an implementation, support is closed by the subsidy of Huaneng Group science and technology item HNKJ15-H12, science and technology supporting project science and technology item Guizhou Province section, Guizhou Province [2019] subsidy of 201970966703X20907 achieves above-mentioned beneficial technical effect, while social benefit after implementation Well.

Claims (8)

1. a kind of energy dissipating flow passage structure for reducing flow velocity, it is characterised in that: including runner hole (1), runner hole (1) inner wall is made One end for the pipes' analysis (11) allowed fluid flow, the pipes' analysis (11) is provided with flow channel entry point (12), the pipes' analysis (11) the other end is provided with runner exit (13), at least one hump weir (2) is provided on the pipes' analysis (11).
2. the energy dissipating flow passage structure according to claim 1 for reducing flow velocity, it is characterised in that: the runner hole (1) is cross-section Facial contour is non-close or closed.
3. the energy dissipating flow passage structure according to claim 1 for reducing flow velocity, it is characterised in that: the runner hole (1) is laterally Section is one of open channel section, city-gate section, circle, the shape of a hoof.
4. the energy dissipating flow passage structure according to claim 1 for reducing flow velocity, it is characterised in that: the multiple hump weir (2) It is interrupted along the pipes' analysis (11) length direction by appropriate spacing or continuously arranges, any two of them hump weir (2) is in institute The projection stated on runner hole (1) cross section is interlaced with each other.
5. the energy dissipating flow passage structure according to claim 1 for reducing flow velocity, it is characterised in that: hump weir (2) shape Projection of the profile on the runner hole (1) cross section includes positioned at the arc section A (21) in left side, positioned at the arc section B at top (23) and the arc section C (22) positioned at right side.
6. the energy dissipating flow passage structure according to claim 5 for reducing flow velocity, it is characterised in that: the arc section A (21), circle Central angle corresponding to segmental arc C (22) is 0 °~180 °.The corresponding central angle of the arc section C (22) is 0 °~180 °.
7. the energy dissipating flow passage structure according to claim 5 for reducing flow velocity, it is characterised in that: hump weir (2) shape Profile further includes being connected between the arc section A (21) and arc section B (23) in the projection on the runner hole (1) vertical section Or it is connected to the straight line linkage section (24) between the arc section C (22) and arc section B (23).
8. the energy dissipating flow passage structure according to claim 1 for reducing flow velocity, it is characterised in that: hump weir (2) height Less than 2/3rds of the runner hole (1) height.
CN201811592428.4A 2018-12-25 2018-12-25 A kind of energy dissipating flow passage structure reducing flow velocity Pending CN109577292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811592428.4A CN109577292A (en) 2018-12-25 2018-12-25 A kind of energy dissipating flow passage structure reducing flow velocity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811592428.4A CN109577292A (en) 2018-12-25 2018-12-25 A kind of energy dissipating flow passage structure reducing flow velocity

Publications (1)

Publication Number Publication Date
CN109577292A true CN109577292A (en) 2019-04-05

Family

ID=65932624

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811592428.4A Pending CN109577292A (en) 2018-12-25 2018-12-25 A kind of energy dissipating flow passage structure reducing flow velocity

Country Status (1)

Country Link
CN (1) CN109577292A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113174973A (en) * 2021-04-27 2021-07-27 长沙理工大学 Soft rock slope ecological protection structure and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113174973A (en) * 2021-04-27 2021-07-27 长沙理工大学 Soft rock slope ecological protection structure and construction method thereof

Similar Documents

Publication Publication Date Title
CN104404926B (en) Dam facing chooses the overfall dam of bank shunting energy dissipating
CN101349047B (en) Aeration type curve ladder energy dissipater in flood discharge hole
CN206625200U (en) A kind of training wall for improving Solution of Flow in Curved Channel fluidised form
CN101182707A (en) Flood discharging and energy dissipating device
CN203755266U (en) Flood discharge structure of high arch dam
CN206157703U (en) Multistage orifice plate dissipation structure of lock water supply pipe
CN103821112B (en) Side goes out to flow spillway on bank along journey
CN102797242B (en) Arrangement structure of overflow surface holes of arch dam
CN105220662B (en) A kind of " dovetail bank+patch slope " aeration method and structure
CN209603094U (en) A kind of low velocity fluid energy dissipating flow passage configuration
CN109577292A (en) A kind of energy dissipating flow passage structure reducing flow velocity
CN202626947U (en) Picking flow type flaring pier of overflow dam
CN204418136U (en) There is pressure sudden enlargement and sudden Circular Jet energy dissipater
CN109252494B (en) A kind of deformation type stilling pond front end energy-dissipating structure and its energy dissipating method
CN100554592C (en) Diffusion type curve trajectory bucket
CN206625199U (en) A kind of water-break tunnel import
CN204589947U (en) A kind of current stabilization anti-attrition absorption basin
CN105155484A (en) Method for reconstructing temporary diversion tunnel into permanent flood discharge facility
CN203821344U (en) Forward water inlet and sand sluicing flush gallery structure of hydropower station
CN206408597U (en) The tail pier and gate pier component of spillway
CN207582437U (en) A kind of anti-cavitation curved Stepped Spillway of destruction
CN104775404B (en) A kind of current stabilization anti-attrition stiling basin
CN204825802U (en) Compound line type overflow weir
CN209066395U (en) A kind of stilling pond for the water sealing structure that consumes energy certainly with combined type
CN101736718B (en) Reversely bevelled flip bucket

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination