CA2132463C - Fish lift elevator - Google Patents
Fish lift elevatorInfo
- Publication number
- CA2132463C CA2132463C CA002132463A CA2132463A CA2132463C CA 2132463 C CA2132463 C CA 2132463C CA 002132463 A CA002132463 A CA 002132463A CA 2132463 A CA2132463 A CA 2132463A CA 2132463 C CA2132463 C CA 2132463C
- Authority
- CA
- Canada
- Prior art keywords
- turret
- gallery
- tunnel
- gate
- fish
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 241000251468 Actinopterygii Species 0.000 claims abstract description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 230000001617 migratory effect Effects 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010042434 Sudden death Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
- E02B8/085—Devices allowing fish migration, e.g. fish traps
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/60—Ecological corridors or buffer zones
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
This invention relates to a structural device for the safe, effortless, efficient and practical passage of migratory fish past dams and other types of river obstructions by means of vertical transport with water.
Description
'~132~3 , Some presently operating fish by-pass systems are successfully operating on lower level dams, but seem to be impractical, costly or dangerous to install at high level locations.
This invention is a very simple solution to passage of fish in an environmentally friendly structure that operates as an hydraulic lift-elevator for spawners or, as a free air-drop passage for smolts. The main feature of the device is an open-topped turret with ports, which has a lower-level protruding gallery with passageway and control valve that allows entry or exit of fish from or into a tunnel through, under or around a river obstruction or a high dam. This innovative blending of gallery, valve and turret, together with ingenious placement of pipes, valves, controls, ports, lights, sensors and closure devices, offers a safe and effortless transit for f;sh when placed on the upstream side of a dam.
This invention relates to a structural device for the safe, effortless, efficient and practical passage of migratory fish past dams and other types of river obstructions by means of vertical transport with water.
To this date, -providlng a method of encouraging and allowing upstream migratory fish past high river dams has proved to be dangerous, costly, difficult or fruitless. There is also great danger to small fish migrating downstream toward the ocean, as they seem to be attracted into penstocks or spillway gates where they come to harm or sudden death.
Existing by-pass systems for fish are of three general types and are usually adapted to lower level river obstructions.
The first and most successful type is the fish ladder. It is a proven system.
The second and partly successful by-pass is' the simple lock with upper and lower gates at either end of a conduit pipe or open trough.
The third type of by-passing is by use of screen diversion, trapping, bailing and some form of physically transporting fish to other - side of dam hy truck or conveyor.
~' Page 2 2~324~3 By devising a vertical lift elevator turret with a minimum of mechanical parts, and which may also be used as safe air-drop container for small fish if ports and valve are left open, the natural energy of stored river forebay water is used for transport of smolts and spawners, thereby saving their strength and condition for ongoing migration. Other advantages the invention offers include the following adaptations. It is designed for easy pre-casting or manufacture, and adapting to existing dams. It will connect to a horizontal tunnel through, under or around a river barrier such as a dam. If the downstream opening of tunnel is the top of a fish ladder, the turret gallery may be located higher up the front face of a dam, and by so doing, would reduce the quantities of water required to operate the turret cycles. The addition of dlversion screens near the top ports would deflect more downstream migrants into the turret from the forebay waters. The simpllcity of the structural shape allows the turret to be formed from steel, concrete or other fabricating material. It should be inexpensive to make or fabricate, and efficient in operation.
In Figure 1, where the dotted lines represent the upstream side of a dam and a tunnel through the dam, this invention is placed for connecting up to the tunnel end.
In its most simple form, the preferred embodiment of the invention consists of: a vertical round turret [1] with closed base and an open top; a protruding access gallery [2] above the turret base shaped in cross section to connect into the upstream end of a tunnel; a horizontally topped baffle wall [3] at or near end of gallery for controlling interior water level; a controllable gate or valve [4] secured within a fixed housing [5] attached to the gallery interior; a rotatable crank shaft [6]
connected to and controlling the gallery valve, extending upward to above water levels, and turnable by a top crank wheel [7] located on a platform [8], accesslble by side ladder [9~ near or at the top of turret; inflow Page 3 2132~63 portholes [10] or slots in upper sidewall of turret placed so that the top hole or holes attract smolts for free-fall alr drop within the turret and through open gallery valve at high spring water level, with lower hole or holes placed for exit of spawners from turret into lower forebay waters during later summer and fall, but inflow volume of water restricted to less than can pass the open gallery valve without rising above it; a light [11] or lights set in the gallery ceiling that will attract the spawners from the tunnel through the gate or valve and into base of the turret;
and, a downflow pipe or tube [12] shaped and extended so that upper inflow end is below the portholes and lower outflow end exits drain water on tunnel side of gallery valve thereby causing forebay water to enter the turret when full, and retain some flow of water through the tunnel while lifted spawners exit through the ports. When operating to lift spawners travelling upstream, the valve is closed when schools of fish enter the turret, thereby causing them to be elevated by trapped water, and to exit through the inflow ports into the river forebay reservoir. After sufficient time is allowed for spawner exit, the gallery valve is slowly opened so as not to flush any waiting fish out of the tunnel, and when fully opened without head pressure, again can be closed after entry of another gathering of spawners within the turret base. The cycle can then be repeated.
In Figure 2, which illustrates innovative improvements to the basics shown in Figure 1, the invention is automated and made adaptable to higher lift locations. The access gallery [2] is shown part into and part projecting from sidewall of turret [1], and with downflow pipe [12]
installed to inside of turret wall.
Other improvements include: a syphon drain [13] with controllable pressure reducing valve [14] at base of turret that opens after time lapse has allowed upstream migrant fish to leave turret, and which closes at reduced head of water, thereby allowing easy opening of the gallery ~ fi 3 ' gate/valve ~4~ without flushing the waiting fish from the adjacent by-pass tunnel; a sonar reader scope [15] with switch located in the fish collection base of turret, that, upon sensing a collected school of wa;ting spawners causes the gallery gate/valve ~4] to close and the trapped turret water to risei a lift water valve [16] in base or lower sidewall of turret, preferably with directional piping, that will open when gallery gate/valve [4] closes, allowing forebay water into turret under waiting spawners so as to cause them to be elevated to open ports [10], and which lift valve closes when a sensor [17] in the downflow pipe [12] signals that turret water is escaping therein; a control station [18]
above, below or to side of gallery gatejvalve [4] for installation of automatic controls, switches, sensors, programs, power feed and command contact; a transparent cover [19] over the turret top; embrasures [20] let into the top edge of the turret so as to allow air breathing under a cover or for periodic inspection or access to inside of turret; wall mounted ladder [21] for access to base of turret; slip cover port hole doors [22]
in slotted guides with arrester stops, for adjusting water flow at ports, or for safety inspections and maintenance within turret.
;; :. .....
This invention is a very simple solution to passage of fish in an environmentally friendly structure that operates as an hydraulic lift-elevator for spawners or, as a free air-drop passage for smolts. The main feature of the device is an open-topped turret with ports, which has a lower-level protruding gallery with passageway and control valve that allows entry or exit of fish from or into a tunnel through, under or around a river obstruction or a high dam. This innovative blending of gallery, valve and turret, together with ingenious placement of pipes, valves, controls, ports, lights, sensors and closure devices, offers a safe and effortless transit for f;sh when placed on the upstream side of a dam.
This invention relates to a structural device for the safe, effortless, efficient and practical passage of migratory fish past dams and other types of river obstructions by means of vertical transport with water.
To this date, -providlng a method of encouraging and allowing upstream migratory fish past high river dams has proved to be dangerous, costly, difficult or fruitless. There is also great danger to small fish migrating downstream toward the ocean, as they seem to be attracted into penstocks or spillway gates where they come to harm or sudden death.
Existing by-pass systems for fish are of three general types and are usually adapted to lower level river obstructions.
The first and most successful type is the fish ladder. It is a proven system.
The second and partly successful by-pass is' the simple lock with upper and lower gates at either end of a conduit pipe or open trough.
The third type of by-passing is by use of screen diversion, trapping, bailing and some form of physically transporting fish to other - side of dam hy truck or conveyor.
~' Page 2 2~324~3 By devising a vertical lift elevator turret with a minimum of mechanical parts, and which may also be used as safe air-drop container for small fish if ports and valve are left open, the natural energy of stored river forebay water is used for transport of smolts and spawners, thereby saving their strength and condition for ongoing migration. Other advantages the invention offers include the following adaptations. It is designed for easy pre-casting or manufacture, and adapting to existing dams. It will connect to a horizontal tunnel through, under or around a river barrier such as a dam. If the downstream opening of tunnel is the top of a fish ladder, the turret gallery may be located higher up the front face of a dam, and by so doing, would reduce the quantities of water required to operate the turret cycles. The addition of dlversion screens near the top ports would deflect more downstream migrants into the turret from the forebay waters. The simpllcity of the structural shape allows the turret to be formed from steel, concrete or other fabricating material. It should be inexpensive to make or fabricate, and efficient in operation.
In Figure 1, where the dotted lines represent the upstream side of a dam and a tunnel through the dam, this invention is placed for connecting up to the tunnel end.
In its most simple form, the preferred embodiment of the invention consists of: a vertical round turret [1] with closed base and an open top; a protruding access gallery [2] above the turret base shaped in cross section to connect into the upstream end of a tunnel; a horizontally topped baffle wall [3] at or near end of gallery for controlling interior water level; a controllable gate or valve [4] secured within a fixed housing [5] attached to the gallery interior; a rotatable crank shaft [6]
connected to and controlling the gallery valve, extending upward to above water levels, and turnable by a top crank wheel [7] located on a platform [8], accesslble by side ladder [9~ near or at the top of turret; inflow Page 3 2132~63 portholes [10] or slots in upper sidewall of turret placed so that the top hole or holes attract smolts for free-fall alr drop within the turret and through open gallery valve at high spring water level, with lower hole or holes placed for exit of spawners from turret into lower forebay waters during later summer and fall, but inflow volume of water restricted to less than can pass the open gallery valve without rising above it; a light [11] or lights set in the gallery ceiling that will attract the spawners from the tunnel through the gate or valve and into base of the turret;
and, a downflow pipe or tube [12] shaped and extended so that upper inflow end is below the portholes and lower outflow end exits drain water on tunnel side of gallery valve thereby causing forebay water to enter the turret when full, and retain some flow of water through the tunnel while lifted spawners exit through the ports. When operating to lift spawners travelling upstream, the valve is closed when schools of fish enter the turret, thereby causing them to be elevated by trapped water, and to exit through the inflow ports into the river forebay reservoir. After sufficient time is allowed for spawner exit, the gallery valve is slowly opened so as not to flush any waiting fish out of the tunnel, and when fully opened without head pressure, again can be closed after entry of another gathering of spawners within the turret base. The cycle can then be repeated.
In Figure 2, which illustrates innovative improvements to the basics shown in Figure 1, the invention is automated and made adaptable to higher lift locations. The access gallery [2] is shown part into and part projecting from sidewall of turret [1], and with downflow pipe [12]
installed to inside of turret wall.
Other improvements include: a syphon drain [13] with controllable pressure reducing valve [14] at base of turret that opens after time lapse has allowed upstream migrant fish to leave turret, and which closes at reduced head of water, thereby allowing easy opening of the gallery ~ fi 3 ' gate/valve ~4~ without flushing the waiting fish from the adjacent by-pass tunnel; a sonar reader scope [15] with switch located in the fish collection base of turret, that, upon sensing a collected school of wa;ting spawners causes the gallery gate/valve ~4] to close and the trapped turret water to risei a lift water valve [16] in base or lower sidewall of turret, preferably with directional piping, that will open when gallery gate/valve [4] closes, allowing forebay water into turret under waiting spawners so as to cause them to be elevated to open ports [10], and which lift valve closes when a sensor [17] in the downflow pipe [12] signals that turret water is escaping therein; a control station [18]
above, below or to side of gallery gatejvalve [4] for installation of automatic controls, switches, sensors, programs, power feed and command contact; a transparent cover [19] over the turret top; embrasures [20] let into the top edge of the turret so as to allow air breathing under a cover or for periodic inspection or access to inside of turret; wall mounted ladder [21] for access to base of turret; slip cover port hole doors [22]
in slotted guides with arrester stops, for adjusting water flow at ports, or for safety inspections and maintenance within turret.
;; :. .....
Claims (2)
1. An hydraulic lift-elevator and air drop vertical passage device adaptable to the upstream side of a dam or river barrier and to be connected to a fish by-pass tunnel, said device comprising an upright turret with closed base and an open top, one or more turret sidewall inflow port-holes at least one port-hole being located below the low-water level on the upstream side of the dam, an open ended access gallery let into the lower side of turret above the base connecting the turret to the tunnel, said gallery containing a water level control baffle at the tunnel end of the gallery, an operable gate on turret side of the gallery, and at least one ceiling light, said turret having a downflow drainpipe with inlet end slightly below bottom port hole and with cross section smaller than the at least one port hole so that the water level inside turret is able to rise to level of the at least one port hole, and an outlet end extending into the gallery on the tunnel side of the gate.
2. The device as claimed in Claim 1, which, when adapted to higher river dams or other barriers, is improved upon by the addition of: adjustable slip-cover doors for the inflow port holes, embrasures in top edge and with transparent cover over the turret, a syphon pressure reducing valve and drain system that prevents quick flushing of fish from bypass tunnel, a sonar fish reader scope with switch that will command closure of the gate for commencing a lift cycle, a lift water valve and connective piping at turret base allowing water from upstream side of dam into the turret controlled by the sonar switch for opening and a downflow pipe sensor for closing, and a waterproof control station located near the gallery gate for containing powered and automatic control systems for programmable and cyclic operation of the valves and gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002132463A CA2132463C (en) | 1994-09-20 | 1994-09-20 | Fish lift elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002132463A CA2132463C (en) | 1994-09-20 | 1994-09-20 | Fish lift elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2132463A1 CA2132463A1 (en) | 1996-03-21 |
| CA2132463C true CA2132463C (en) | 1998-11-24 |
Family
ID=4154362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002132463A Expired - Fee Related CA2132463C (en) | 1994-09-20 | 1994-09-20 | Fish lift elevator |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2132463C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736253B (en) * | 2019-02-22 | 2023-12-01 | 长江勘测规划设计研究有限责任公司 | Fish collecting box for collecting fish by utilizing tail water and fish collecting method thereof |
| CN114561918B (en) * | 2019-02-22 | 2023-04-18 | 长江勘测规划设计研究有限责任公司 | Fish passing method of high dam comprehensive fish passing facility |
| CN111188321B (en) * | 2020-01-13 | 2024-06-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Quick gate vent structure of water inlet |
-
1994
- 1994-09-20 CA CA002132463A patent/CA2132463C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2132463A1 (en) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |