CN209907343U

CN209907343U - Fixed fish gathering device of river mouth under dam

Info

Publication number: CN209907343U
Application number: CN201920364198.XU
Authority: CN
Inventors: 王继保; 程帅; 陈和春; 罗东旭; 刘超凡; 夏伟; 陈艳超; 王岑; 陈士桐; 石迅雷; 方强; 向晨光; 宋基权; 杨盼
Original assignee: China Three Gorges University CTGU
Current assignee: China Three Gorges University CTGU
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-01-07
Anticipated expiration: 2029-03-21

Abstract

The utility model discloses a fixed fish collecting device at the river mouth under a dam, which comprises a water-blocking submerged dam and a groove body arranged on the water-blocking submerged dam, wherein one end in the groove body is provided with a rectifier, a water inlet pipe is arranged between the rectifier and the end part of the groove body, the side part of the groove body is provided with a fish collecting box, the other end in the groove body is provided with an anti-escape net, and the bottom of the outer side of the anti-escape net is hinged with the top of an inlet tongue plate; the utility model discloses can collect the shoal of fish that bank department is difficult to collect effectively.

Description

Fixed fish gathering device of river mouth under dam

Technical Field

The utility model relates to a fish cross dam technical field specifically indicates a fixed fish gathering device of river mouth under dam.

Background

The development of hydraulic engineering in China is more and more extensive, and with the construction of various large-scale hydro hubs, various dams are built in the middle of a river channel to store water for power generation, flood prevention and drought control, irrigation and shipping and the like, but the dams bring the advantages and limit the activity range of organisms in the river channel, such as the migration of fishes. The current solution to the migration problem is to build fish facilities or manually collect and transport fish by using a fish collecting boat. The fish passing facilities have various defects, such as fishways, fish lifts, fish gates and the like.

The fish gathering boat can freely select fish gathering positions, is flexible and changeable, has good efficiency, consumes manpower and material resources, needs to make a boat, petroleum and other various extra consumptions or pollutions, and can be influenced by weather;

the inlet of the fishway is generally arranged at the position of a tail water pipe of a power station, two sides of an overflow dam section and the like with concentrated water flow, and fishes can prefer such areas, so that the fishes are attracted to enter the fishway at the position, the outlet of the fishway needs to be far away from the water flow concentrated positions such as the overflow spillway, and the fishes entering the reservoir are prevented from returning to the downstream. Therefore, although the fishway consumes less manpower and has considerable efficiency, the fishway is complex in design, difficult to construct and greatly limited by the terrain;

the fish lifting machine and the fish gate can be regarded as manually lifting the fish to be released upstream, a large amount of manpower is consumed, fishing is not centralized, and the efficiency is low.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide a fixed fish device that gathers in river mouth under dam to solve the problem that proposes in the background art.

The utility model discloses a solve above-mentioned technical problem, the technical scheme who adopts is: a fixed fish collecting device at a river mouth under a dam comprises a water-blocking submerged dam and a groove body arranged on the water-blocking submerged dam, wherein a rectifier is arranged at one end in the groove body, a water inlet pipe is arranged between the rectifier and the end part of the groove body, a fish collecting box is arranged at the side part of the groove body, an anti-escape net is arranged at the other end in the groove body, and the bottom of the outer side of the anti-escape net is hinged to the top of an inlet tongue plate.

Preferably, the side part of the tank body is provided with a channel, three fish blocking nets which are vertically connected with each other are arranged outside the channel, and the bottoms of the fish blocking nets are connected with the top of the fish collecting box.

Preferably, the number of the escape-proof nets is two, the escape-proof nets are distributed in the groove body in a splayed shape, and the outer side openings of the escape-proof nets are larger than the inner side openings of the escape-proof nets.

Preferably, the rectifier is a partition body uniformly provided with a plurality of water through holes.

Preferably, the bottom of the outer side of the escape-proof net is hinged with the top of the inlet tongue plate through a rotating shaft, and the inlet tongue plate is of a trapezoidal structure.

The utility model has the advantages that:

1. the fish shoal which is difficult to collect at the bank can be effectively collected.

2. The device is established to collect the fish shoal on the premise that the fish shoal enters the device voluntarily, accords with the biological and ecological law and cannot damage the fish.

3. Except for water diversion and lifting devices, no energy is needed, and the lifting devices cannot work all the time, so that the energy consumption is very little.

4. No oil pollution discharge, no waste generation, and no pollution to water.

5. The system has the advantages of low cost, low manufacturing cost, easy design and convenient construction, can be built and assembled at any time, can also be built in advance, detects the position of the fish school, and is built at the river mouth of the dam in a targeted manner.

6. The restriction by natural factors such as terrain, weather and the like is small, and the application range is wide.

7. After the device is operated, the manpower is hardly consumed, the device is practical and efficient, the cost is minimized, and the benefit is maximized.

Drawings

FIG. 1 is a schematic structural view of a fixed fish gathering device at the river mouth under a dam;

FIG. 2 is a schematic top view of the structure of FIG. 1;

in the figure, a water-blocking submerged dam 1, a trough body 2, a channel 2.1, a fish-blocking net 2.2, a rectifier 3, a water inlet pipe 4, a fish collecting box 5, an escape-proof net 6, an inlet tongue plate 7 and a rotating shaft 8.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1 and 2, the fixed fish collecting device at the river mouth under the dam comprises a water-blocking submerged dam 1 and a trough body 2 arranged on the water-blocking submerged dam 1, wherein a rectifier 3 is arranged at one end in the trough body 2, a water inlet pipe 4 is arranged between the rectifier 3 and the end part of the trough body 2, a fish collecting box 5 is arranged at the side part of the trough body 2, an anti-escape net 6 is arranged at the other end in the trough body 2, and the bottom of the outer side of the anti-escape net 6 is hinged with the top of an inlet tongue plate 7.

Preferably, a channel 2.1 is arranged at the side part of the tank body 2, three fish blocking nets 2.2 which are vertically connected with each other are arranged at the outer side of the channel 2.1, and the bottoms of the fish blocking nets 2.2 are connected with the top of the fish collecting box 5.

Preferably, the number of the escape-proof nets 6 is two, the escape-proof nets are distributed in the groove body 2 in a splayed shape, and the outer side openings of the escape-proof nets are larger than the inner side openings of the escape-proof nets. The design can effectively prevent the fishes from escaping from the tank body 2.

Preferably, the rectifier 3 is a partition body uniformly provided with a plurality of water through holes.

Preferably, the bottom of the outer side of the escape-proof net 6 is hinged with the top of the inlet tongue plate 7 through a rotating shaft 8, and the inlet tongue plate 7 is of a trapezoidal structure. After the design, the inclination angle of the inlet tongue plate 7 can be freely adjusted.

The working principle of the embodiment is as follows:

the device is arranged at a river mouth at the downstream of a power station or a dam, so that the water-blocking submerged dam 1 is connected with the tank body 2, the height of the water-blocking submerged dam 1 is flush with the normal water level, the first half section of the tank body 2 is half submerged in water, water is introduced into the water inlet pipe 4, the water flow enters the rectifier 3 from the water inlet pipe 4, the water flow is more stable through the rectification action of the rectifier 3, fish-luring water flow is formed in the tank body 2, the fish-luring water flow passes through the tank body 2 and then passes through the escape-proof net 6, flows out of the inlet tongue plate 7 and enters a river channel, the fish is attracted by the fish-luring water flow, enters the tank body 2 along the inlet tongue plate 7 and travels through the escape-proof net 6, and then the fish can be driven into an area where the fish-blocking net 2.2 is located, namely the upper part of the fish collection; in the embodiment, the water flow velocity of the fish attracting water flow is 0.5-1 m/s; after the fish falls into the fish collecting box 5, the fish collecting box 5 can be lifted to the working table top through the lifting device, and then the fish collecting operation is completed.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a fixed fish device that gathers of river mouth under dam, includes water-stopping submerged dam (1) and locates cell body (2) on water-stopping submerged dam (1), its characterized in that: one end is equipped with rectifier (3) in cell body (2), is equipped with inlet tube (4) between rectifier (3) and cell body (2) tip, and cell body (2) lateral part is equipped with collection fish box (5), and the other end is equipped with in cell body (2) prevents escaping net (6), prevents escaping net (6) outside bottom and import hyoplastron (7) top and is articulated to be connected.

2. The fixed fish gathering device of the river mouth under the dam as claimed in claim 1, wherein: a channel (2.1) is arranged at the side part of the tank body (2), three fish blocking nets (2.2) which are vertically connected with each other are arranged at the outer side of the channel (2.1), and the bottoms of the fish blocking nets (2.2) are connected with the top of the fish collecting box (5).

3. The fixed fish gathering device of the river mouth under the dam as claimed in claim 1, wherein: the number of the escape-proof nets (6) is two, the escape-proof nets are distributed in the groove body (2) in a splayed shape, and the outer side openings of the escape-proof nets are larger than the inner side openings of the escape-proof nets.

4. The fixed fish gathering device of the river mouth under the dam as claimed in claim 1, wherein: the rectifier (3) is a partition body uniformly provided with a plurality of water holes.

5. The fixed fish gathering device of the river mouth under the dam as claimed in claim 1, wherein: the bottom of the outer side of the escape-proof net (6) is hinged with the top of the inlet tongue plate (7) through a rotating shaft (8), and the inlet tongue plate (7) is of a trapezoidal structure.