Diversion facility fish protection device

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for preventing getting of young fish into diversion facilities. Proposed device contains fish retaining shield made in form of hollow guides arranged in tiers across water channels in depth with displacement of each upper tier towards diversion channel. It contains also perforated air duct located on bottom of water channel directly before said shield and train-and-fish trough arranged in upper part of channel in parallel with air duct and connected with outlet and device to let out young fish arranged in height of fish retaining shield. Guides of U-shaped are installed at angle to current of intake channel, their planes are perforated and open end part is pointed to bottom of water channel. Young fish let out device is made in form of perforated shields installed side guides for vertical displacement by drive in height of fish retaining shield relative to additional guides made from side of bank edges of intake channel. Perforation holes of shields and u-shaped guides do not coincide in light.

EFFECT: possibility of retaining and bringing young fish out of limits of influence of diversion facility.

8 dwg

 

The invention relates to hydraulic construction, and in particular to methods, structures and devices designed to protect juvenile fish from entering the intake.

Known fish protection device [1], including repositoryname screen installed across the stream and formed from strings stretched across perforated ducts arranged in tiers on the depth of the stream, offset upstream tier in the direction of the intake channel.

The disadvantage of this protection device is the low efficiency of fish protection.

The closest in technical essence and the achieved result is the protection device [2], including specified in the watercourse repositoryname screen, made in the form of hollow guides positioned across the watercourse and installed tiers depth of the stream, offset upstream tier in the direction of the intake channel, perforated duct connected to a source of compressed air and located at the bottom of the watercourse, directly in front of the screen, placed at the top of the screen parallel to the duct motorolamotorola tray, coupled with rubottom, and means for draining fish fry hosted by the height of the screen.

The disadvantage of this device is VA is the low efficiency of the protection and diversion of juvenile fish from the zone of influence of the water front.

The aim of the invention is the creation of effective conditions for detention and diversion of juvenile fish outside the zone of influence of the intake.

The invention consists in the following.

Running rails at an angle to the transit flow with an inclination in the direction of the diversion channel, you can create repositoryname screen in the form of a louver system. Implementation guide U-shaped with an open bottom end part and the inside of the rails perforated screens allows you to create a means for removal of juvenile fish in the form of a perforated screen.

Thanks to the implementation of the U-shaped guides perforated with the placement of the holes of the perforation does not coincide with the holes of the perforation perforated screens, the screen performs two inseparable functions inside the U-shaped rails, screens and the plane of the guides create a waterproof surface, and in its extended condition, the screens are perforated screen in the intervals between the end parts of the guide. In the latter case, open the perforation holes of the U-shaped guides are able to skip the extra expense in the intake channel, and the filtration rate in all holes perforation is reduced exactly two times, which is beneficial to process the CE allocation of juvenile fish along the screen.

The solution of this problem is achieved by creating a new design of fish protection devices. Graphic material explaining the essence of the invention is shown on the following drawings:

figure 1 is a fragment of the device, the design of fish protection screen formed of U-shaped guides and advanced perforated screens. A variant of the operation in the case of high concentrations of juvenile fish in the inlet channel;

figure 2 - the same, the status screen when the perforated screens are inside the U-shaped guides;

figure 3 - protection device, a longitudinal section, option works with solid repositorium the screen.

figure 4 - the same, in mode of allotment fish fry in the case of the minimum concentration of juvenile fish in the inlet channel. Perforated screens are inside the U-shaped guides;

5 is a view of the device from the side of the inlet channel, perforated screens are inside the U-shaped guides water flow on the water is in between the horizontal end parts of the U-shaped guides;

6 is a cross-section a-a in figure 5;

Fig.7 is a view of the device from the side of the inlet channel, perforated screens extended from the U-shaped guides, water consumption for water produces the I through the perforated screen, formed of U-shaped rails and perforated screens;

Fig - cross section B-B.

The protection device includes installed in the watercourse 1 repositoryname screen 2, is made in the form of hollow rails 3, positioned across the stream 1 and installed tiers 4 on the depth of the stream 1, offset upstream tier 4 in the direction of the intake channel 5, the perforated duct 6 connected to a source of compressed air (not shown) and located at the bottom of the watercourse 1, directly in front of the screen 2, placed in the upper part of the screen 2 is parallel to the duct 6 motorolamotorola tray 7, coupled with rubottom 8, and means for draining fish fry hosted by the height of the screen 2. Rails 3 is made U-shaped, mounted at an angle to the flow of the inlet channel 9, while their plane is made perforated, and the open end part 10 facing to the bottom of the watercourse 1, and means for draining fish fry is made in the form of perforated screens 11 located inside the guides 3 and having the opportunity by means of a drive (not shown) is moved vertically along the height of the screen 2 regarding additional guides 12, performed by the coastal edges of the inlet channel 9, while the perforation holes 13 screens and P-clicks the local guides 3 in the light are not the same.

For the efficient movement of screens 11 they are equipped with rollers 14, which are able to move along a guide 12. Diversion of juvenile fish and borne debris produced by the torch 15 air-bubble curtains. At the location of the screens 11 inside the U-shaped rails 3 water intake in the intake channel 5 is made through the intake openings 16 formed horizontal end parts of the U-shaped rails 3.

The protection device operates as follows.

Service manual diversion structure includes a compressor (not shown), thereby resulting in operational status of the protection device, while setiausaha juvenile fish and borne debris transported torch 15 air-bubble curtains in the surface horizons of the watercourse 1, thereby purifying the water from 1 young fish. From surface horizons of watercourse 1 juvenile fish are diverted into rebooted 8 through motorolamotorola tray 7. Purified from fish fry and transported the waste water enters the intake channel 5. The torch 15 is created perforated duct 6, located at the bottom of the watercourse 1. Juvenile fish under the action of the torch 15 is drifted to the surface of the water, which is motorolamotorola tray 7 by which juvenile fish are diverted into rebooted 8. By performing n is sending 3 in the form of the U-shaped elements within these guides set perforated screens 11 (4), with the possibility of vertical movement relative to the plane of the screen 2.

In the case of high concentrations of juvenile fish in the watercourse 1 service manual actuates the actuator (not shown), and perforated screens 11 are nominated and block the intake openings 16. Efficient movement screens 11 is facilitated by the rollers 14, moving in a guide 12. In this embodiment, operation of the flow diverted at the intake channel 5, is filtered through the perforation holes 13 of perforated screens 11 and the perforation holes 13 of the U-shaped rails 3, while the filtration rate is two times less than in the case of only the intake holes 16 (figure 4).

Offer fish protection device allows a simple and affordable means in terms of the slope of juvenile fish to take water, without causing environmental damage to the reservoir. Furthermore, the basic components repositoriesuses screen - louver system, perforated screens and torch air-bubble curtains, you can create a combined repositoryname screen. An advantage of the present invention, it should be noted clever layout of the perforated screens made inside the U-shaped guide that allows you to protect juvenile fish during its high concentration of the supply channel and provides efficient transport of juvenile fish and transported debris in the surface horizons of the stream.

Sources of information

1. AS THE USSR №1102842 (USSR). IPC E 02 In 8/08. "Protection device". Publ. 1983.

2. AS THE USSR №1707128 (USSR). IPC E 02 In 8/08. "The protection device of the diversion structure". Authors: A.A. Chistyakov, Fomenko, VA, Cherkasov, VA and Skin V.N. Publ. 23.01.92. B. I. No. 3, 1992.

The protection device of the diversion structure, including specified in the watercourse repositoryname screen, made in the form of hollow guides positioned across the watercourse and installed tiers depth of the stream offset of the upstream layer in the direction of the intake channel, perforated duct connected to a source of compressed air and located at the bottom of the watercourse immediately before repositorium the screen, placed at the top of repositoriesuses screen parallel to the duct motorolamotorola tray, coupled with rubottom, and means for draining fish fry hosted by the height repositoriesuses screen, characterized in that the guides are made U-shaped, mounted at an angle to the flow inlet channel, while their plane is made perforated, and the open end portion facing to the bottom of the watercourse, and means for draining fish fry is made in the form of perforated screens located inside the guides and have their opportunity through drive - vertical travel height repositoriesuses screen on additional guides made by the coastal edges of the inlet channel, while the perforation holes of the screens and the U-shaped guides in the light do not match.



 

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