Fish passing device of water conservancy and hydropower dam

Abstract

The invention discloses a fish passing device of a water conservancy and hydropower dam, and belongs to the technical field of water conservancy, the fish passing device comprises a support, cylinders, lifting rods and a fish pond, the cylinders are uniformly distributed on the support, the cylinders are distributed in a step shape, the upper ends of the cylinders are fixedly connected with the support, the lifting rods are distributed in a step shape, and the lifting rods are distributed at the lower ends of the cylinders; the fishponds are distributed in a step shape, the lifting rod drives the fishpond on the upper step to ascend, water is poured into the fishpond on the higher step in the same way, meanwhile, the air cylinder on the lowermost side is made to restore, and after the air cylinder drives the fourth step, the air cylinder on the lowermost side is driven to operate in the same way. When fishes enter the fishpond on the lower side, the fishes are conveyed upwards through the wriggling of the fishpond until the fishes reach the upstream of a dam and are poured into upstream water, so that the fishes can conveniently pass through the upstream from the downstream, and the practicability is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy, and particularly relates to a fish passage device for a water conservancy and hydropower dam. Background Art

[0002] A dam refers to a dike for intercepting a river and holding back water, such as a water retaining dike for a reservoir, river, etc. Generally, a reservoir dam mainly consists of a main dam, a subsidiary dam, a normal spillway, an emergency spillway, a newly added emergency spillway, a Lingzheng Canal culvert and a power station.

[0003] Although the dam brings convenience for power generation, it also causes certain obstacles to the ecology in the river. A fishway or fish transportation equipment needs to be set up. The conventional fishway is relatively steep, different from the situation before the dam was built, and some fish are difficult to swim upstream. Moreover, the continuity of fish transportation by the conventional fish transportation elevator is relatively low, resulting in a relatively low practicality of the conventional fish transportation equipment.

[0004] Therefore, we propose a fish passage device for a water conservancy and hydropower dam to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of relatively low practicality of the conventional fish transportation equipment, and to propose a fish passage device for a water conservancy and hydropower dam.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A fish passage device for a water conservancy and hydropower dam includes a bracket, cylinders, lifting rods and fish ponds. The cylinders are evenly distributed on the bracket, and the cylinders are arranged in a stepped manner. The upper ends of the cylinders are fixedly connected to the bracket. The lifting rods are arranged in a stepped manner. The lifting rods are distributed at the lower ends of the cylinders, and the lower ends of the cylinders are fixedly installed with the upper ends of the lifting rods. The fish ponds are arranged in a stepped manner. The lower ends of the lifting rods are fixedly connected to the inner lower ends of the fish ponds. The fish ponds are in sealed sliding contact with each other. Immerse the lower part of the device in water, place the upper part of the bracket on the upper side of the water surface of the dam. Drive the lowermost cylinder to contract, so that the cylinder drives the lifting rod to rise, and the lifting rod drives the fish pond to rise, so that the lowermost fish pond pours water into the fish pond of the upper step. Then drive the cylinder of the upper step to contract, drive the lifting rod of the upper step to rise through the cylinder, drive the fish pond of the upper step to rise through the lifting rod, and similarly pour water into the fish pond of the even higher step. At the same time, restore the lowermost cylinder. When the cylinder is driven to the fourth step, drive the lowermost cylinder to operate similarly, so that the fish ponds move in a peristaltic manner to convey water upward. When the fish enter the lower fish pond, they are conveyed upward through the peristalsis of the fish ponds until they reach the upstream of the dam and are poured into the upstream water to facilitate the fish to swim from the downstream to the upstream.

[0008] Preferably, a water tank is provided at the lower part of the bracket, and the bracket is fixedly connected to the water tank. Assuming that the water tank is outside the dam, a small amount of water from the upstream is injected into the water tank, so that the water flows downward along the water tank, forming an impact on the water surface of the downstream, creating an illusion of upstream water flow for the fish, and luring the fish that need to swim upstream into the water tank, facilitating the capture of the fish that need to migrate upstream in the fish pond.

[0009] Preferably, the water tank includes a tank body and a water collecting cover. The lower end of the tank body is fixedly connected to the water collecting cover, and the internal spaces of the tank body and the water collecting cover are interconnected. A small amount of water from the upstream is discharged into the water collecting cover through the tank body, forming an impact force on the water collecting cover, causing the water collecting cover to drain water towards the downstream water surface, facilitating the formation of a relative water flow in the downstream water.

[0010] Preferably, the bracket includes a first U-shaped frame, a connecting seat, and a second U-shaped frame. The connecting seat is fixedly connected to the upper ends of the first U-shaped frame and the connecting seat. The connecting seat is used to connect the air cylinder. The first U-shaped frame and the second U-shaped frame are used to lift the connecting seat high, suspending the air cylinder to prevent the air cylinder from being immersed in water, thus facilitating the waterproofing of the air cylinder.

[0011] Preferably, the air cylinder includes a cylinder body and a first flange. The first flange is fixedly connected to the lower end of the piston rod of the cylinder body. By pulling the first flange through the cylinder body, the lifting rod is driven to rise, or by driving the first flange to descend through the cylinder body, the lifting rod is driven to descend, facilitating the control of the lifting of the lifting rod.

[0012] Preferably, the lifting rod includes a second flange and a rod body. The lower end of the second flange is fixedly connected to the upper end of the rod body. When the second flange is subjected to an upward pulling force, the rod body is driven to rise, and when the second flange descends, the rod body is driven to descend, facilitating the control of the rise and fall of the fish pond.

[0013] Preferably, the fish pond includes a pond body, and a drain port is provided in the upper part on one side of the pond body. The drain port is sealed by the pond body of the upper-stage fish pond. When the fish pond rises, the drain port is opened, and the water inside the pond body is discharged into the pond body of the upper-stage fish pond through the drain port, causing the water to move from bottom to top, facilitating the upward transportation of the fish in the water.

[0014] Preferably, a water replenishing port is provided at one end of the pond body facing away from the drain port. Water is slowly replenished into the pond body of the uppermost-stage fish pond from the upstream, and the water overflowing from the inside of the pond body is slowly discharged into the pond body of the next-stage fish pond through the water replenishing port, used to make up for the small amount of water lost during the peristalsis process of the fish pond, improving the stability of transporting fish.

[0015] In summary, the technical effects and advantages of the present invention:

[0016] 1. Immerse the lower part of the device in water, place the upper part of the bracket on the upper side of the water surface on the dam, drive the lowermost cylinder to contract, so that the cylinder drives the lifting rod to rise, drive the fishpond to rise through the lifting rod, and make the lowermost fishpond pour water into the fishpond of the upper level. Then drive the cylinder of the upper level to contract, drive the lifting rod of the upper level to rise through the cylinder, drive the fishpond of the upper level to rise through the lifting rod, and similarly pour water into the fishpond of the even higher level. At the same time, restore the lowermost cylinder. When the cylinder is driven to the fourth level, drive the lowermost cylinder to operate similarly, so that the fishpond moves in a peristaltic manner to convey water upward. When the fish enter the lower fishpond, they are conveyed upward through the peristaltic movement of the fishpond until they reach the upstream of the dam and are poured into the upstream water, facilitating the passage of fish from downstream to upstream, thus improving the practicability.

[0017] 2. Assume that the water tank is outside the dam. Inject a small amount of water from the upstream into the water tank, make the water flow downward along the water tank, form an impact on the water surface of the downstream, create an illusion of upstream water flow for the fish, and lure the fish that need to swim upstream into the water tank, facilitating the fishpond to capture the fish that need to migrate upward.

[0018] 3. A small amount of water from the upstream is discharged into the water collecting cover through the trough body, forming an impact force on the water collecting cover, so that the water collecting cover discharges water to the downstream water surface, facilitating the formation of a relative water flow in the downstream water.

[0019] 4. The connecting seat is used to connect the cylinder. The connecting seat is lifted high by using the first portal frame and the second portal frame, making the cylinder suspended and preventing the cylinder from being immersed in water, thus facilitating the waterproofing of the cylinder.

[0020] 5. Utilize the sealed drain outlet of the fishpond of the upper level. When the fishpond rises, make the drain outlet unfold, and the water inside the pond body is discharged into the pond body of the fishpond of the upper level through the drain outlet, enabling the water to move from bottom to top and facilitating the upward conveyance of the fish in the water.

[0021] 6. Slowly replenish water into the pond body of the uppermost fishpond from the upstream. The water overflowing from the inside of the pond body is slowly discharged into the pond body of the fishpond of the next lower level through the water replenishing port, used to make up for the small amount of water lost during the peristaltic process of the fishpond, and improve the stability of transporting fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the water tank structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the bracket structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the cylinder structure of the present invention;

[0026] Figure 5Schematic diagram of the lifting rod structure of the present invention;

[0027] Figure 6 Schematic diagram of the fishpond structure of the present invention.

[0028] In the figure: 2, water tank; 3, bracket; 4, air cylinder; 5, lifting rod; 6, fishpond; 21, tank body; 22, water collecting cover; 31, first portal frame; 32, connecting seat; 33, second portal frame; 41, cylinder body; 42, first flange; 51, second flange; 52, rod body; 61, pond body; 62, drain port; 63, water replenishing port. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments.

[0030] Refer to Figure 1 , a fish passage device for a water conservancy and hydropower dam, including a bracket 3, an air cylinder 4, a lifting rod 5 and a fishpond 6. The air cylinders 4 are evenly distributed on the bracket 3, the air cylinders 4 are arranged in a stepped manner, the upper ends of the air cylinders 4 are fixedly connected to the bracket 3, the lifting rods 5 are arranged in a stepped manner, the lifting rods 5 are distributed at the lower ends of the air cylinders 4, and the lower ends of the air cylinders 4 are fixedly installed with the upper ends of the lifting rods 5. The fishponds 6 are arranged in a stepped manner, the lower ends of the lifting rods 5 are fixedly connected to the inner lower ends of the fishponds 6, and the fishponds 6 are in sealed sliding contact with each other. Immerse the lower part of the device in water, place the upper part of the bracket 3 on the upper side of the water surface of the dam, drive the lowermost air cylinder 4 to contract, so that the air cylinder 4 drives the lifting rod 5 to rise, drive the fishpond 6 to rise through the lifting rod 5, so that the lowermost fishpond 6 pours water into the fishpond 6 of the upper step, and then drive the air cylinder 4 of the upper step to contract, drive the lifting rod 5 of the upper step to rise through the air cylinder 4, drive the fishpond 6 of the upper step to rise through the lifting rod 5, and similarly pour water into the fishpond 6 of the higher step. At the same time, restore the lowermost air cylinder 4. When the air cylinder 4 is driven to the fourth step, drive the lowermost air cylinder 4 to operate similarly, so that the fishpond 6 moves in a peristaltic manner to convey water upward. After the fish enter the lower fishpond 6, they are conveyed upward through the peristalsis of the fishpond 6 until they reach the upstream of the dam and pour into the upstream water to realize fish passage from downstream to upstream.

[0031] Refer to Figure 1 , a water tank 2 is provided at the lower part of the bracket 3, and the bracket 3 is fixedly connected to the water tank 2. The water tank 2 is assumed to be outside the dam, and a small amount of water from the upstream is injected into the water tank 2, so that the water flows downward along the water tank 2, forming an impact on the downstream water surface, creating an illusion of countercurrent for the fish, and attracting the fish that need to swim upstream into the water tank 2, which is beneficial for the fishpond 6 to capture the fish that need to migrate upward.

[0032] Refer to Figure 1 and2 As shown in Figure 0, the water tank 2 includes a tank body 21 and a water collecting cover 22. The water collecting cover 22 is immersed in the water downstream. The lower end of the tank body 21 is fixedly connected to the water collecting cover 22, and the internal spaces of the tank body 21 and the water collecting cover 22 are interconnected. A small amount of water upstream is discharged into the water collecting cover 22 through the tank body 21, forming an impact force on the water collecting cover 22, causing the water collecting cover 22 to drain water towards the downstream water surface and forming a relative water flow.

[0033] Refer to Figure 1 、 2 and Figure 3, the bracket 3 includes a first U-shaped frame 31, a connecting seat 32, and a second U-shaped frame 33. The lower end of the first U-shaped frame 31 is fixedly connected to the tank body 21, the lower end of the second U-shaped frame 33 is fixedly connected to the water collecting cover 22, and the connecting seat 32 is fixedly connected to the upper ends of the first U-shaped frame 31 and the connecting seat 32. The connecting seat 32 is used to connect the cylinder 4. The first U-shaped frame 31 and the second U-shaped frame 33 are used to hold the connecting seat 32 high, suspending the cylinder 4 and preventing the cylinder 4 from being immersed in water.

[0034] Refer to Figure 1 、 3 and Figure 4, the cylinder 4 includes a cylinder body 41 and a first flange 42. The upper end of the cylinder body 41 is fixedly connected to the inside of the connecting seat 32, and the first flange 42 is fixedly connected to the lower end of the piston rod of the cylinder body 41. The first flange 42 is used for butt-connecting and installing the lifting rod 5. By pulling the first flange 42 through the cylinder body 41, the lifting rod 5 is driven to rise, or by driving the first flange 42 to descend through the cylinder body 41, the lifting rod 5 is driven to descend and recover.

[0035] Refer to Figure 1 、 4 and Figure 5, the lifting rod 5 includes a second flange 51 and a rod body 52. The second flange 51 is butted against the lower end of the first flange 42, and the second flange 51 and the first flange 42 are fixedly installed by screws. The lower end of the second flange 51 is fixedly connected to the upper end of the rod body 52. When the second flange 51 is subjected to an upward pulling force, the rod body 52 is driven to rise, and when the second flange 51 descends, the rod body 52 is driven to descend, which is used to control the rise and fall of the fish pond 6.

[0036] Refer to Figure 1 、 5 and Figure 6, the fish pond 6 includes a pond body 61. The lower end of the rod body 52 is fixedly connected to the inner bottom end of the pond body 61. A drain port 62 is provided in the upper part of one side of the pond body 61. The drain port 62 of the pond body 61 of the previous-stage fish pond 6 is sealed. When the fish pond 6 rises, the drain port 62 is opened, and the water inside the pond body 61 is discharged into the pond body 61 of the previous-stage fish pond 6 through the drain port 62, causing the water to move from bottom to top and transporting the fish in the water upwards.

[0037] Refer to Figure 1 and 6, a water replenishing port 63 is provided at one end of the pond body 61 facing away from the drain port 62. Water is slowly replenished into the pond body 61 of the uppermost fish pond 6 from the upstream. The water overflowing inside the pond body 61 slowly drains into the pond body 61 of the next lower fish pond 6 through the water replenishing port 63 to make up for the small amount of water lost during the peristaltic movement of the fish pond 6.

[0038] Working principle: Immerse the lower part of the device in water, place the upper part of the bracket 3 above the water surface on the dam, drive the lowermost cylinder 4 to contract, so that the cylinder 4 drives the lifting rod 5 to rise, drive the fish pond 6 to rise through the lifting rod 5, and make the lowermost fish pond 6 pour water into the fish pond 6 of the upper stage. Then drive the cylinder 4 of the upper stage to contract, drive the lifting rod 5 of the upper stage to rise through the cylinder 4, drive the fish pond 6 of the upper stage to rise through the lifting rod 5, and similarly pour water into the fish pond 6 of the even higher stage. At the same time, make the lowermost cylinder 4 recover. When the cylinder 4 is driven to the fourth stage, drive the lowermost cylinder 4 to operate similarly, so that the fish pond 6 moves in a peristaltic manner to convey water upward. After the fish enter the lower fish pond 6, they are conveyed upward through the peristaltic movement of the fish pond 6 until they reach the upstream of the dam and pour into the upstream water to achieve fish migration from downstream to upstream; assume that the water trough 2 is outside the dam, inject a small amount of water from the upstream into the water trough 2, make the water flow downward along the water trough 2, form an impact on the downstream water surface, create an illusion of countercurrent for the fish, and lure the fish that need to swim upstream into the water trough 2, which is beneficial for the fish pond 6 to catch the fish that need to migrate upward; use the pond body 61 of the upper fish pond 6 to seal the drain port 62. When the fish pond 6 rises, the drain port 62 is unfolded, and the water inside the pond body 61 is discharged into the pond body 61 of the upper fish pond 6 through the drain port 62, so that the water moves upward from bottom to top and conveys the fish in the water upward.

[0039] As mentioned above, it is only a preferred specific embodiment of the invention, but the protection scope of the invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the invention, according to the technical solution of the invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the invention.

[0040] In the description, the application direction of the prior art known to those skilled in the art and not changed by the invention is simply mentioned, which forms a complete technology in combination with the invention; the overly popularized technology well-known to those skilled in the art is avoided to assist those skilled in the art to quickly understand the main content of the invention.

Claims

1. A fish passage device for a water conservancy and hydropower dam, characterized in that: It includes a bracket (3), a cylinder (4), a lifting rod (5) and a fishpond (6). The cylinders (4) are evenly distributed on the bracket (3), and the cylinders (4) are arranged in a stepped manner. The upper end of the cylinder (4) is fixedly connected to the bracket (3). The lifting rods (5) are arranged in a stepped manner. The lifting rods (5) are distributed at the lower end of the cylinders (4), and the lower end of the cylinder (4) is fixedly installed with the upper end of the lifting rod (5). The fishponds (6) are arranged in a stepped manner. The lower end of the lifting rod (5) is fixedly connected to the inner lower end of the fishpond (6). The fishponds (6) are in sealed sliding contact with each other.

2. The fish passage device for a water conservancy and hydropower dam according to claim 1, characterized in that: A water trough (2) is provided at the lower part of the bracket (3), and the bracket (3) is fixedly connected to the water trough (2).

3. The fish passage device for a water conservancy and hydropower dam according to claim 2, characterized in that: The water trough (2) includes a trough body (21) and a water collecting cover (22). The lower end of the trough body (21) is fixedly connected to the water collecting cover (22), and the internal spaces of the trough body (21) and the water collecting cover (22) are communicated.

4. The fish passage device for a water conservancy and hydropower dam according to claim 1, characterized in that: The bracket (3) includes a first portal frame (31), a connecting seat (32) and a second portal frame (33). The connecting seat (32) is fixedly connected to the upper ends of the first portal frame (31) and the connecting seat (32).

5. The fish passage device of a water conservancy and hydropower dam according to claim 1, characterized in that: The cylinder (4) includes a cylinder body (41) and a first flange (42). The first flange (42) is fixedly connected to the lower end of the piston rod of the cylinder body (41).

6. The fish passage device for a water conservancy and hydropower dam according to claim 1, characterized in that: The lifting rod (5) includes a second flange (51) and a rod body (52). The lower end of the second flange (51) is fixedly connected to the upper end of the rod body (52).

7. The fish passage device for a water conservancy and hydropower dam according to claim 1, characterized in that: The fishpond (6) includes a pond body (61). A drain port (62) is opened at the upper part of one side of the pond body (61).

8. The fish passage device for a water conservancy and hydropower dam according to claim 7, characterized in that: A water replenishing port (63) is opened at one end of the pond body (61) facing away from the drain port (62).

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