A fish lifting machine structure for improving fish luring effect

Abstract

The present invention provides a fish lift structure for improving the effect of attracting fish, including an elevator; the elevator is installed on the top of the dam in the reservoir area, and a fish attracting chamber that can be raised and lowered is installed in the downstream direction of the dam. The fish attracting chamber is arranged in parallel along the coast, and a fish attracting inlet is opened on the fish attracting chamber. A fish lifting box is hoisted in the upstream direction of the elevator, and a fish lifting box track is arranged at the position corresponding to the fish attracting inlet on the top of the elevator. The fish lifting box is placed in the fish lifting box track, and the fish lifting box track extends from the upstream water area of ​​the dam through the top of the dam to the downstream bottom. The present invention arranges multiple fish attracting chambers in parallel along the coast, which increases the probability of attracting fish from the front end; by using the oil pressure lifting structure to drive the fish attracting device to freely change in the vertical direction, the problem of low actual operation effect caused by the non-connection between the traditional fish attracting chamber and the downstream water level of the dam site is solved; a split-type anti-escape device is arranged in the fish attracting box to further improve the effect of attracting fish.

Description

Technical Field

[0001] The invention relates to a fish lifting machine structure for improving the effect of attracting and collecting fish, and belongs to the field of water conservancy and hydropower ecological protection. Background Art

[0002] For example, the invention patent with publication number CN108221888A discloses a fish lifting and fish gathering system device, the core idea of ​​which is to attract fish through fish gathering corridors, transfer fish through fish driving fences and fish gathering boxes through opening and closing machines, and control the water volume of the fish gathering system through water replenishment corridors to enable fish to pass through the dam.

[0003] However, the fish-collecting system device of the fish elevator still has the problems of limited fish-collecting range and low fish-collecting efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a fish lifting structure for improving the fish attracting effect. The fish lifting structure for improving the fish attracting effect can ensure that the indoor working water depth is connected with the water level of the river channel below the dam, and can solve the key problems of the fish attracting system of the fish lifting machine, that is, the fish collecting range is not wide and the fish collecting efficiency is not high. At the same time, a fish lifting box track is set in combination with the lifting track and the fish attracting room structure to improve the fish collection and operation capacity, and effectively enhance the efficiency of the fish lifting machine in attracting fish across the dam in water conservancy and hydropower projects.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a fish lift structure for improving the effect of attracting fish, comprising an elevator; the elevator is installed on the top of a dam in a reservoir area, a liftable fish attracting chamber is installed in the downstream direction of the dam, a plurality of the fish attracting chambers are arranged in parallel along a coast, a fish attracting inlet is opened on the fish attracting chamber, a fish lifting box is hoisted in the upstream direction of the elevator, a fish lifting box track is arranged at a position of the elevator top corresponding to the fish attracting inlet, the fish lifting box is placed in the fish lifting box track, and the fish lifting box track extends from the upstream waters of the dam through the top of the dam to the downstream bottom.

[0007] A telescopic pull rod is tiltedly arranged in the downstream direction of the dam, the upper end of the telescopic pull rod can be extended to the downstream end of the fish lifting box track at the top of the dam, and the lower end of the telescopic pull rod is fixed below the fish luring room.

[0008] The fish attracting inlet is provided with a double-opening anti-escape door.

[0009] A fish attracting water pipe is fixed at the position of the fish attracting inlet, and the fish attracting water pipe is connected with the inside and outside of the fish attracting and collecting room.

[0010] A lifting track is arranged on the downstream dam surface of the dam, and the fish lifting box can move in the lifting track.

[0011] The lifting of the fish trapping chamber is driven by a driving oil cylinder arranged at the bottom of the fish trapping chamber.

[0012] A water supply pipe is installed in the riverbed downstream of the dam, below the fish trap chamber.

[0013] The fish attracting water pipe is communicated with the water supply pipeline.

[0014] The beneficial effects of the present invention are as follows: a plurality of fish attracting chambers are arranged in parallel along the coast, thereby increasing the probability of attracting fish from the front end; the fish attracting device is driven to freely change in the vertical direction by means of an oil pressure lifting structure, thereby solving the problem of low actual operation effect caused by the non-connection between the traditional fish attracting chamber and the water level downstream of the dam site; a split-type escape prevention device is arranged in the fish attracting box, thereby further improving the fish attracting effect; the water depth in the fish attracting chamber is controlled by a water supply pipeline, and water is filled into the fish attracting inlet through a fish attracting water pipe, thereby further improving the fish attracting effect; the fish lifting box is connected by a retractable pull rod, and a fish lifting box track connecting the dam bottom to each fish attracting box is arranged, thereby further improving the collection and operation capacity of the fish school; thereby solving the biggest disadvantage of low fish attracting effect at the front end of the fish lifter, and the operation mode is flexible, thereby promoting the practical use of the fish lifter in the field of fish protection in water conservancy and hydropower engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the arrangement structure of the present invention;

[0016] Figure 2 yes Figure 1 A side view structural schematic diagram of;

[0017] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the fish trap chamber;

[0018] Figure 4 yes Figure 1 Schematic diagram of the lifting structure of the fish attracting room.

[0019] In the figure: 1-dam, 2-reservoir area, 3-lifting track, 4-fish attracting room, 5-elevator, 6-liter fish box, 7-fish attracting water pipe, 8-fish attracting inlet, 9-water supply pipeline control valve, 10-water supply pipeline, 11-double-opening anti-escape door, 12-telescopic pull rod, 13-driving cylinder, 14-liter fish box track. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0021] like Figures 1 to 4A fish elevator structure for improving the effect of attracting fish is shown, comprising an elevator 5; the elevator 5 is installed on the top of the dam 1 in the reservoir area 2, and a liftable fish attracting chamber 4 is installed in the downstream direction of the dam 1. The fish attracting chamber 4 is arranged in parallel along the coast, and a fish attracting inlet 8 is opened on the fish attracting chamber 4. A fish lifting box 6 is hoisted in the upstream direction of the elevator 5, and a fish lifting box track 14 is arranged at the top of the elevator 5 corresponding to the fish attracting inlet 8. The fish lifting box 6 is placed in the fish lifting box track 14, and the fish lifting box track 14 extends from the upstream waters of the dam 1 through the top of the dam 1 to the downstream bottom.

[0022] A telescopic rod 12 is tilted in the downstream direction of the dam 1 , and the upper end of the telescopic rod 12 can extend to the downstream end of the fish lifting box track 14 at the top of the dam 1 , and the lower end of the telescopic rod 12 is fixed below the fish attracting chamber 4 .

[0023] The fish attracting inlet 8 is provided with a double-opening anti-escape door 11.

[0024] A fish attracting water pipe 7 is fixed at the position of the fish attracting inlet 8 , and the fish attracting water pipe 7 is connected with the inside and outside of the fish attracting chamber 4 .

[0025] A lifting track 3 is arranged on the downstream dam surface of the dam 1 , and the fish lifting box 6 can move in the lifting track 3 .

[0026] The lifting of the fish trapping chamber 4 is driven by a driving cylinder 13 installed at the bottom of the fish trapping chamber 4.

[0027] A water supply pipe 10 is installed at a position of the riverbed downstream of the dam 1 and below the fish trapping chamber 4 .

[0028] The fish attracting water pipe 7 is communicated with the water supply pipe 10.

[0029] Therefore, the power of the present invention is controlled by the driving motor. When the fish lifter is working, the driving motor controls the driving cylinder 13 according to the real-time water level downstream of the dam site, and further drives the lifter to lift the fish trap box 4 in the vertical direction to control the working elevation of the fish trap inlet 8 of the fish trap box 4 to connect with the downstream water level; a plurality of fish trap chambers 4 are arranged in parallel along the bank below the dam, each fish trap chamber 4 corresponds to a fish trap inlet 8, and a double-opening anti-escape door 11 in the form of a large inlet and a small outlet is arranged inside each fish trap inlet 8 to prevent the fish trapped in the chamber from escaping; a water supply pipe 10 is arranged inside each fish trap chamber 4 to control the water volume in the fish trap chamber 4 to meet the working water depth of 1-2 meters, and the material of the water supply pipe 10 is stainless steel, aluminum alloy, etc. with good anti-seepage performance, high strength, corrosion resistance, and tensile and compressive resistance; the fish trap water pipe 7 at the fish trap inlet 8 is connected to the water supply pipe 10 through the bottom of the fish trap chamber 4, and the water flow conditions preferred by fish are created at the fish trap inlet 8 to enhance the fish trapping effect of the fish trap chamber.

[0030] The fish lifting part is completed by the lifting track 3, the elevator 5, and the fish lifting box 6. A fish lifting box track 14 connected to the bottom of the dam is set in the longitudinal direction of the fish trapping chamber 4. When a sufficient number of fish are collected in the fish trapping chamber 4, the retractable push-pull rod 12 connected to the fish lifting box 6 is started to push the fish lifting box 6 to the fish gathering place in the fish trapping chamber 4, collect the fish in the fish trapping chamber 4 into the fish lifting box 6, and move the fish lifting box 6 to the bottom of the dam along the fish lifting box track 14 through the retractable push-pull rod 12; start the elevator 5, and lift the fish in the fish lifting box 6 to the upstream water level along the lifting track 3; finally, open the upstream gate to drive the fish in the fish lifting box into the upstream reservoir waters.

[0031] For the use of the present invention, taking the Chinese redfin mullet, a national second-class protected animal with the need to spawn across the dam in the Yangtze River Basin, as an example, the specific implementation operation process is as follows:

[0032] (I) The main habitat of Chinese mullet is the upper reaches of the Yangtze River and its tributaries, and the spawning grounds are widely distributed in the upper main stream and tributaries such as the Minjiang River and Jialing River. After the mullet spawns, the fry drift down with the river water and spread in the middle and lower reaches of the Yangtze River and its tributaries and lakes connected to the river. The mullet growing in the middle and lower reaches will swim upstream after growing to a certain size, and live in the upper reaches until they mature. The breeding season of Chinese mullet is generally from early March to late April, and the peak breeding period is about 20 days from the Waking of Insects to the Spring Equinox, and the suitable flow rate is 0.9-1.3m / s.

[0033] (ii) Whenever the peak period of migratory fish arrives, the gathering of mullets is monitored at the fish inlet of the fish attracting room, and the driving device of the fish attracting room is opened in combination with the water level of the river at the inlet below the dam, so that the inlet of the fish attracting room is driven to connect with the water level of the river in the vertical direction; the valve of the fish attracting water pipe connected to the fish attracting inlet is opened, and the flow rate of the water pipe is adjusted to a suitable flow rate for mullets to attract mullets to enter the fish attracting room; after the mullets enter the fish attracting room through the double-leaf escape prevention door, the valve of the water supply pipe in the fish attracting room is opened to create a water depth and flow state suitable for the survival of fish, so as to ensure the temporary habitat conditions of fish in the fish collecting room.

[0034] (3) Start the fish lifting box track device, move the fish lifting box along the fish lifting box track to the place where the Chinese mullet gathers through the retractable pull rod, collect the fish into the fish lifting box and transport it to the bottom of the dam, start the fish lifting device, control the fish lifting box to move from bottom to top along the lifting track to the top of the dam through the elevator, and finally open the upstream gate to drive the fish in the fish lifting box into the upstream reservoir waters.

Claims

1. A fish lifting machine structure for improving the effect of attracting fish, comprising a lifting machine (5), characterized in that: The elevator (5) is installed on the top of the dam (1) in the reservoir area (2). A liftable fish trap chamber (4) is installed in the downstream direction of the dam (1). The fish trap chamber (4) is arranged in parallel along the shore. The fish trap chamber (4) is provided with a fish trap inlet (8). The elevator (5) is hoisted with a fish lift box (6) in the upstream direction. A fish lift box track (14) is provided at a position corresponding to the fish trap inlet (8) at the top of the elevator (5). The fish lift box (6) is placed in the fish lift box track (14). The fish lift box track (14) extends from the upstream waters of the dam (1) through the top of the dam (1) to the downstream bottom. A telescopic rod (12) is arranged obliquely in the downstream direction of the dam (1), the upper end of the telescopic rod (12) can be extended to the downstream end of the fish lifting box track (14) at the top of the dam (1), and the lower end of the telescopic rod (12) is fixed below the fish trapping chamber (4); The lifting and lowering of the fish attracting chamber (4) is driven by a driving oil cylinder (13) installed at the bottom of the fish attracting chamber (4).

2. The fish lifting machine structure for improving the fish attracting effect as claimed in claim 1, characterized in that: The fish attracting inlet (8) is provided with a split-type escape prevention door (11).

3. The fish lifting machine structure for improving the fish attracting effect as claimed in claim 1, characterized in that: A fish attracting water pipe (7) is fixed at the position of the fish attracting inlet (8), and the fish attracting water pipe (7) is connected to the inside and outside of the fish attracting chamber (4).

4. The fish lifting machine structure for improving the fish attracting effect as claimed in claim 1, characterized in that: A lifting track (3) is arranged on the downstream dam surface of the dam (1), and the fish lifting box (6) can move in the lifting track (3).

5. The fish lifting machine structure for improving the fish attracting effect as claimed in claim 3, characterized in that: A water supply pipe (10) is installed at a position below the fish trapping chamber (4) on the riverbed downstream of the dam (1).

6. The fish lifting machine structure for improving the fish attracting effect as claimed in claim 5, characterized in that: The fish attracting water pipe (7) is connected to the water supply pipe (10).

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