CN106522176A - Fish inlet structure for fish passing facility - Google Patents

Fish inlet structure for fish passing facility Download PDF

Info

Publication number
CN106522176A
CN106522176A CN201611016295.7A CN201611016295A CN106522176A CN 106522176 A CN106522176 A CN 106522176A CN 201611016295 A CN201611016295 A CN 201611016295A CN 106522176 A CN106522176 A CN 106522176A
Authority
CN
China
Prior art keywords
fish
screen
shell
inlet
inlet structure
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.)
Granted
Application number
CN201611016295.7A
Other languages
Chinese (zh)
Other versions
CN106522176B (en
Inventor
文典
孙大东
郎建
吴迪
康昭君
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 Chengdu Engineering Co Ltd
Original Assignee
PowerChina Chengdu Engineering 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 Chengdu Engineering Co Ltd filed Critical PowerChina Chengdu Engineering Co Ltd
Priority to CN201611016295.7A priority Critical patent/CN106522176B/en
Publication of CN106522176A publication Critical patent/CN106522176A/en
Application granted granted Critical
Publication of CN106522176B publication Critical patent/CN106522176B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E02B8/08Fish passes or other means providing for migration of fish; Passages for rafts or boats
    • E02B8/085Devices allowing fish migration, e.g. fish traps
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B1/00Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E02B1/006Arresting, diverting or chasing away fish in water-courses or water intake ducts, seas or lakes, e.g. fish barrages, deterrent devices ; Devices for cleaning fish barriers
    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/60Ecological corridors or buffer zones

Abstract

The invention discloses a fish inlet structure for a fish passing facility and belongs to the field of hydropower engineering. The fish inlet structure which is capable of luring fish in multiple directions and used for the fish passing facility is provided and structurally comprises a cylindrical shell. A cylindrical fish screen is arranged in the shell. An annular fish passing path is formed between the cylindrical fish screen and the shell. A separation fish screen for separating the fish passing path is arranged in the fish passing path. One end of the fish passing path separated by the fish screen penetrates the shell and then communicates with the fish passing facility. Multiple fish inlets are formed in the peripheral direction of the shell at intervals. A stirring mechanism is arranged in the cylindrical fish screen. According to the fish inlet structure for the fish passing facility, the fish inlets distributed in the peripheral direction of the shell are formed, meanwhile water flow generated by stirring of the stirring mechanism can flow along the annular fish passing path, suction water flow in the fish inlet direction is formed at each fish inlet, and multi-direction fish luring is achieved at the same time in the peripheral direction of the shell.

Description

The fish inlet structure of fish pass structure
Technical field
The present invention relates to Hydraulic and Hydro-Power Engineering field, more particularly to a kind of fish inlet structure of fish pass structure.
Background technology
In recent years, the construction of hydropower plant of China enters peak period, but original Fish are separated by the construction on power station lock, dam For upper and lower Liang Ge colonies so as to migration can not be carried out and exchanged with genetic, weaken the viability of population.In addition, in society Under the trend that the attention rate of each bound pair hydroelectric project ecological environmental protection of meeting increasingly increases, large-scale hydroelectric project is being built and is being run During the environment that produces and ecological disruption become social concerns focus, the enforcement of its environment and ecological protection measure is directly closed It is tied to the overall image of engineering, or even the construction of engineering constraint and operation.In order to protect aquatic ecological, and for implementing 《The Fishery Law of the People's Republic of China》、《Water Law of the People's Republic of China》Etc. the requirement of laws and regulations, current many hydroelectric projects Require setting fish pass structure.Its objective is the big above and below the dam of UNICOM, the Fish being blocked can be by fish pass structure migration simultaneously Gene exchange is completed, reduces destruction of the engineering construction to aquatic ecological as far as possible.
The fish inlet structure design of fish pass structure is the emphasis of fish pass structure engineering design, and can fish inlet very fast by Fish Ground is realized, and promotes which to smoothly enter, and is the key of fish success or failure;If fish inlet design is improper, although inside fish pass structure Have it is good cross fish condition, and in rain.The method of Fish is attracted to have current, physics capture, sound, light, chemical substance etc. at present Various ways;Existing fish inlet design, Main Basiss flow into attraction of the current in river to Fish from fish pass structure fish inlet Effect.If the flow velocity at fish inlet is inadequate, it is impossible to form the attraction current of some strength, it usually needs arrange moisturizing facility, Existing moisturizing facility typically increases flow so as to form obvious flow velocity to attract fish in river course at fish pass structure fish inlet Class.Existing fish pass structure fish inlet structure has the disadvantage that:
1) the attraction current of existing fish pass structure fish inlet, generally originate from the flow of fish pass structure itself, if flow is not Enough need to fish inlet moisturizing, for the fish pass structure of fish channel structure, typically from upstream diversion, but as head becomes Dynamic problem, moisturizing flow velocity are difficult to effective control;And for fish pass structures such as fish lift, transporting something containerized fish etc., typically in downstream Pumping plant increase water diversion flow is set, but this kind of mode energy consumption is larger, it is relatively costly.
2) fish pass structure fish inlet is generally only open with one, it is impossible to fully attract periphery different directions position cluster Fish enters fish inlet, even if some fish inlets have multiple openings of different directions, but general moisturizing direction be all it is unique, The moisturizing current in other directions are not obvious, or can produce certain turbulent flow, are unfavorable for that Fish enter.
3) existing fish pass structure normally only attracts Fish, fish inlet typically to adopt non-transparent material, do not consider using current The measures such as illumination coordinate attracting with current are attracted.
The content of the invention
Present invention solves the technical problem that being to provide a kind of fish inlet of the fish pass structure that attracting can be carried out from multiple directions Structure.
The technical solution adopted for the present invention to solve the technical problems is:The fish inlet structure of fish pass structure, it is described enter fish Mouth structure includes cylindrical shell, and inside the shell is provided with tubular fish screen, is formed between tubular fish screen and shell The Guo Yuyou roads of annular, are provided with the cut-off fish screen for separating Guo Yuyou roads in Guo Yuyou roads, by cut-off fish screen cut-off The one end in Guo Yuyou roads afterwards is connected with fish pass structure through after shell;Shell it is circumferentially-spaced be provided with it is multiple enter fish Mouthful;Rabbling mechanism is internally provided with tubular fish screen.
It is further:The shell is made of clear material, and is additionally provided with many colour bands in tubular fish screen Illuminating lamp.
It is further:The illuminating lamp is arranged on rabbling mechanism.
It is further:In Guo Yuyou roads, it is current side from the trend of one end connected with fish pass structure to the other end To;Fish inlet is stretched out by the tangential direction along water (flow) direction at the fish inlet.
It is further:Gate is provided with fish inlet.
It is further:The shell is to be coaxially disposed with tubular fish screen.
It is further:The two ends in housing axis direction are provided with end cap, at the two ends of tubular fish screen axis direction It is provided with end fish screen;Through hole corresponding with end fish screen is provided with the end cap of upper end and/or the end cap of lower end.
It is further:The tubular fish screen, cut-off fish screen and end fish screen are structure as a whole.
It is further:Also include being fixed in fish inlet structure making its floatable floating member.
It is further:The floating member is arranged on the bottom of fish inlet structure, and is provided with floating member Through hole corresponding with end fish screen.
The invention has the beneficial effects as follows:By arranging along the circumferentially distributed multiple fish inlets of shell, can simultaneously to shell week Multiple directions realize attracting upwards;Simultaneously in inside the shell, can be along the mistake of annular by the current produced by the agitation of rabbling mechanism Yu You roads flow, and then the attraction current along fish inlet direction can be formed at each fish inlet, and then can ensure that different directions Fish inlet attraction water (flow) direction it is consistent with the direction of fish inlet respectively, while can ensure that the attraction current at each fish inlet Flow strength it is roughly the same, can so improve attract current attracting effect.In addition, can also pass through to arrange with many colour bands Illuminating lamp, coordinates and attracts current and illumination to carry out attracting together.In addition, can also be by arranging floating member, so as to entirely enter fish Mouth structure floatability so when water level changes, can automatically adjust the position of whole fish inlet structure in water.
Description of the drawings
Fig. 1 is the signal of the fish inlet structure with the overlook direction of the fish pass structure attachment structure of fish pass form of the present invention Figure;
Front view in Fig. 2 Fig. 1;
Fig. 3 is the schematic diagram of bottom when fish inlet structure setting has floating member;
It is labeled as in figure:Shell 1, tubular fish screen 2, Guo Yuyou roads 3, cut-off fish screen 4, fish inlet 5, rabbling mechanism 6, Fish pass structure 7, illuminating lamp 8, water (flow) direction 9, enter fish passage 10, gate 11, floating member 12, end cap 13, end fish screen 14, Fish roam all around the would is to 15.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1 to Figure 3, the fish inlet structure of fish pass structure of the present invention, the fish inlet structure include Cylindrical shell 1, is provided with tubular fish screen 2 in shell 1, and annular is formed between tubular fish screen 2 and shell 1 Guo Yuyou roads 3, are provided with the cut-off fish screen 4 for separating Guo Yuyou roads 3 in Guo Yuyou roads 3, after being separated by cut-off fish screen 4 Guo Yuyou roads 3 one end through connecting with fish pass structure 7 after shell 1;Shell 1 it is circumferentially-spaced be provided with it is multiple enter Lymphogranuloma inguinale 5;Rabbling mechanism 6 is internally provided with tubular fish screen 2.
Wherein, the effect of stirring structure 6 is to strengthen the streamflow regime in Guo Yuyou roads 3, and is formed in Guo Yuyou roads 3 Along the annular water flow of the flowing of Guo Yuyou roads 3;And can flow out from fish inlet 5 when annular water flow is at fish inlet 5, so can be Form the attraction current towards different directions at each fish inlet 5 respectively, can be real on the different direction of fish inlet structure with this Existing attracting.Specifically, rabbling mechanism 6 can by the paddle that is arranged in tubular fish screen 2, while paddle by rotating shaft with Corresponding drive mechanism is connected, to drive rotating shaft to rotate together with paddle by drive mechanism.
In addition, the fish pass structure 7 in above-mentioned can be the various fish pass structures such as fish pass or fish gathering groove, entering in the present invention Lymphogranuloma inguinale structure is provided in the structure of 7 porch of fish pass structure, to strengthen the attractant effect to fish, promotes fish to tie by fish inlet Structure is entered in corresponding fish pass structure 7.Fish pass structure 7 wherein shown in accompanying drawing 1 is fish channel structure.
In addition, rabbling mechanism 6 is mainly wrapped up by the effect of tubular fish screen 2, to prevent rabbling mechanism 6 in stirring When the shoal of fish is damaged;Simultaneously by being arranged to grid, the current formed after can causing to be stirred by rabbling mechanism 6 are passed through Circulation is formed in Guo Yuyou roads 3 after tubular fish screen 2.Tubular fish screen 2, so, passes through to be coaxially disposed preferably with shell 1 The Guo Yuyou roads 3 formed by the two are actual for a circulus.And arrange cut-off fish screen 4, then be in order to by Guo Yuyou roads 3 every It is disconnected, so, will be by obstructing fish when trip is to the end connected with fish pass structure 7 in the shoal of fish moved about along Guo Yuyou roads 3 The stop of grid 4 and enter in fish pass structure 7.
In addition, the present invention may further be provided shell 1 be made of clear material, for example with transparent acrylic material Make, while being provided with the illuminating lamp 8 with many colour bands in tubular fish screen 2.So, can be sent by illuminating lamp 8 and be carried The illumination of color, further improves the attractant effect to the shoal of fish by illumination;But also can by using different color illumination, Play and the variety classes shoal of fish is lured.Wherein, the so-called illuminating lamp 8 with many colour bands, refers to the illumination that illuminating lamp 8 sends With various different color colour bands.More specifically, for the mounting means of illuminating lamp 8, tubular can be arranged on being fixed In fish screen 2, which should be now avoided certainly to interfere with rabbling mechanism 6;Or also illuminating lamp 8 can be to be mounted directly to stir Mix in mechanism 6 to rotate with rabbling mechanism 6.
More specifically, referring to the drawings shown in 1, the present invention can also in Guo Yuyou roads 3, from fish pass structure 7 together with The trend of one end to the other end is water (flow) direction 9, and accordingly, reverse with water (flow) direction 9 is fish roam all around the would to 15;In fish inlet At 5, at this, fish inlet 5 is stretched out and formed into fish passage 10 after certain length by the tangential direction of water (flow) direction 9.From accompanying drawing 1 Shown in, enter fish passage 10 by what the diverse location in 1 circumference of shell was arranged, its direction will be different, and each The direction for entering fish passage 10 is in tangent structure with annular Guo Yuyou roads 3;Therefore pass through fish passage 10 and flow out attraction Current will be towards different directions, and by the cushioning effect for crossing fish passage 10 with certain length so that attract current It is stable towards more collection neutralization, its attracting effect can be improved.
In addition, the present invention further can also be provided with gate 11 at fish inlet 5, and by gate 11, can be by each fish inlet 5 Close or open;After fish inlet 5 are closed, you can be effectively prevented from shoal of fish entrance.Certainly, it had been provided with fish passage 10 When, gate 11 can be set in the free end for crossing fish fish pass 10, as shown in Figure 1.
Without loss of generality, the present invention generally can be provided with end cap 13 at the two ends of 1 axis direction of shell, while blocking in tubular The two ends of 2 axis direction of fish corral are provided with end fish screen 14;Can arrange on the end cap 13 of upper end and/or the end cap 13 of lower end Have and 14 corresponding through hole of end fish screen.The effect of above-mentioned setting end cap 13 mainly avoids the flowing in Guo Yuyou roads 3 Annular water flow is flowed out from two ends;And the effect of end fish screen 14 is set, then it is in order to avoid the shoal of fish is from the two of tubular fish screen 2 End end is entered in tubular fish screen 2, while when rabbling mechanism 6 is in whipping process, can also pass through the bottom of tubular fish screen 2 Hold to middle part and absorb water, i.e., by arranging logical with the 14 corresponding position of end fish screen of 2 bottom of tubular fish screen on shell 1 Hole, can by through hole from the bottom of tubular fish screen 2 to tubular fish screen 2 in supply water.Referring to the drawings shown in 2, it is under Through-hole structure is provided with the end cap 13 at end, so when rabbling mechanism 6 is stirred, the through hole on lower end end cap 13 can be passed through to cylinder Supply water in shape fish screen 2.
In addition, the tubular fish screen 2, cut-off fish screen 4 and end fish screen 14 described in the invention described above can be adopted respectively With independent part, then assembled, also above-mentioned three can be arranged be structure as a whole or by it is therein arbitrarily both set Set as one structure.
In addition, referring to the drawings shown in 2 and accompanying drawing 3, the present invention is further also provided with floating member 12, while will drift Floating part 12 is fixed in fish inlet structure.The effect for arranging floating member 12 is whole fish inlet structure is floated in water It is floating, so, fish inlet structure can be made to fluctuate therewith when water level changes, and then ensure fish inlet structure in water Depth location.Specifically, the floating member 12 can be arranged on the bottom of fish inlet structure;Also, when tubular fish screen 2 is needed When absorbing water from the bottom of fish inlet structure, it is provided with and the end in 2 bottom of tubular fish screen on floating member 12 accordingly 14 corresponding through hole of portion's fish screen.
In sum, fish inlet structure of the present invention, its without the need for drawing water diversion from upstream diversion or from downstream, and It is directly to be stirred by arranging rabbling mechanism 6, to form attraction current, therefore its waterflow stabilization, adjustable for producing, and Energy consumption is relatively low.In addition, the present invention can be provided with the attraction water at fish inlet, and each fish inlet in a plurality of directions Stream is consistent with fish inlet direction, and attracts the fluidised form of current uniform and stable, it can be ensured that attracting is better.In addition, this It is bright that current can also will be attracted to use cooperatively with illumination, attracting effect can be further enhanced.

Claims (10)

1. the fish inlet structure of fish pass structure, it is characterised in that:The fish inlet structure includes cylindrical shell (1), Tubular fish screen (2) is provided with shell (1), the Guo Yuyou roads of annular are formed between tubular fish screen (2) and shell (1) (3) the cut-off fish screen (4) that Guo Yuyou roads (3) are separated, is provided with Guo Yuyou roads (3), by cut-off fish screen (4) cut-off The one end in Guo Yuyou roads (3) afterwards is connected with fish pass structure (7) afterwards through shell (1);Circumferentially-spaced in shell (1) sets It is equipped with multiple fish inlets (5);Rabbling mechanism (6) is internally provided with tubular fish screen (2).
2. the fish inlet structure of fish pass structure as claimed in claim 1, it is characterised in that:The shell (1) is by transparent material Make, the illuminating lamp with many colour bands (8) is additionally provided with tubular fish screen (2).
3. the fish inlet structure of fish pass structure as claimed in claim 2, it is characterised in that:The illuminating lamp (8) is installed in stirring Mix in mechanism (6).
4. the fish inlet structure of fish pass structure as claimed in claim 1, it is characterised in that:In Guo Yuyou roads (3), from mistake The trend of one end to the other end that facilities for fish's passage (7) is connected is water (flow) direction (9);In fish inlet (5) place cutting along water (flow) direction (9) Fish inlet (5) is stretched out and formed into fish passage (10) after certain length by line direction.
5. the fish inlet structure of fish pass structure as claimed in claim 1, it is characterised in that:Fish inlet (5) place is provided with lock Door (11).
6. the fish inlet structure of fish pass structure as claimed in claim 1, it is characterised in that:The shell (1) blocks fish with tubular Grid (2) are to be coaxially disposed.
7. the fish inlet structure of fish pass structure as claimed in claim 1, it is characterised in that:The two of shell (1) axis direction End is provided with end cap (13), and the two ends of tubular fish screen (2) axis direction are provided with end fish screen (14);At the end of upper end Through hole corresponding with end fish screen (14) is provided with the end cap (13) of lid (13) and/or lower end.
8. the fish inlet structure of fish pass structure as claimed in claim 7, it is characterised in that:The tubular fish screen (2), cut-off Fish screen (4) and end fish screen (14) are structure as a whole.
9. the fish inlet structure of fish pass structure as claimed in any of claims 1 to 8 in one of claims, it is characterised in that:Also include solid Being scheduled in fish inlet structure makes its floatable floating member (12).
10. the fish inlet structure of fish pass structure as claimed in claim 9, it is characterised in that:The floating member (12) is arranged In the bottom of fish inlet structure, and through hole corresponding with end fish screen (14) is provided with floating member (12).
CN201611016295.7A 2016-11-18 2016-11-18 The fish inlet structure of fish pass structure Active CN106522176B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611016295.7A CN106522176B (en) 2016-11-18 2016-11-18 The fish inlet structure of fish pass structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611016295.7A CN106522176B (en) 2016-11-18 2016-11-18 The fish inlet structure of fish pass structure

Publications (2)

Publication Number Publication Date
CN106522176A true CN106522176A (en) 2017-03-22
CN106522176B CN106522176B (en) 2018-09-11

Family

ID=58352579

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611016295.7A Active CN106522176B (en) 2016-11-18 2016-11-18 The fish inlet structure of fish pass structure

Country Status (1)

Country Link
CN (1) CN106522176B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114508082A (en) * 2022-01-06 2022-05-17 上海市园林设计研究总院有限公司 Unpowered power-assisted migration device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10292354A (en) * 1997-04-11 1998-11-04 進太郎 ▲つし▼馬 Fish pass
CN2692206Y (en) * 2004-02-03 2005-04-13 于明 River dam biotunnel
RU2307892C1 (en) * 2006-02-28 2007-10-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Новочеркасская государственная мелиоративная академия" ФГОУ ВПО (НГМА) Fish pass
CN104988886A (en) * 2015-07-14 2015-10-21 安徽理工大学 Water power revolving door type fishway
CN206189361U (en) * 2016-11-18 2017-05-24 中国电建集团成都勘测设计研究院有限公司 Fish pass structure advances lymphogranuloma inguinale structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10292354A (en) * 1997-04-11 1998-11-04 進太郎 ▲つし▼馬 Fish pass
CN2692206Y (en) * 2004-02-03 2005-04-13 于明 River dam biotunnel
RU2307892C1 (en) * 2006-02-28 2007-10-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Новочеркасская государственная мелиоративная академия" ФГОУ ВПО (НГМА) Fish pass
CN104988886A (en) * 2015-07-14 2015-10-21 安徽理工大学 Water power revolving door type fishway
CN206189361U (en) * 2016-11-18 2017-05-24 中国电建集团成都勘测设计研究院有限公司 Fish pass structure advances lymphogranuloma inguinale structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114508082A (en) * 2022-01-06 2022-05-17 上海市园林设计研究总院有限公司 Unpowered power-assisted migration device

Also Published As

Publication number Publication date
CN106522176B (en) 2018-09-11

Similar Documents

Publication Publication Date Title
CN204443750U (en) A kind of fish-baiting instrument and fish-catching apparatus
CN109469030B (en) Fish gathering and transporting system for diversion type power generation high dam
CN206189361U (en) Fish pass structure advances lymphogranuloma inguinale structure
CN101512073A (en) Fish way of turbine structure and gate structure for tidal power plant
CN106522176B (en) The fish inlet structure of fish pass structure
CN114319262A (en) Fish migration channel with energy dissipation structure
CN108308080B (en) Water flow type mixing and feeding device system and application method thereof
CN108293947A (en) A kind of aquaculture aeration equipment
CN205865651U (en) Fish swimming trainer
WO2019017258A1 (en) Curtained waterway-type fish preserve
CN203913047U (en) Collapsible shoal trapping mudskipper cage tool
Lin et al. An experimental study on fish attraction using a fish barge model
KR101288089B1 (en) Fish way structure for tower type fish watching
CN207626393U (en) A kind of intelligence floatation type pond inner recirculation flow water fish cultivates trench bottom aeration system
CN106864711B (en) Adaptive sound wave, which lures, drives the dual-purpose submariner device of fish
CN205671306U (en) A kind of transporting something containerized fish system being applicable to the up dam excessively of Fish
CN109850964A (en) A kind of purification device and purification method of contaminated water body
CN215210906U (en) Fishway for passing fish through water intake of dam
CN206325736U (en) A kind of flusher
CN104988886A (en) Water power revolving door type fishway
CN211211052U (en) Fishery trapping device
CN205623887U (en) Three -dimensional ecotype increases breeds artificial fish reef
CN212629589U (en) Oxygenation device for agricultural aquaculture
CN203692220U (en) High-elevation shrimp culture pond discharge mechanism
CN209603099U (en) A kind of transporting something containerized fish system for water channeling type power generation high dam

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant