Hydraulic bottom hole sand flow device

Abstract

This invention provides a hydraulic dam bottom hole sand discharge device, including a sand discharge cylinder, a sand discharge pipe connected to the sand discharge cylinder, and a movable cover located in the sand discharge cylinder. A sand discharge hole is formed on the surface of the hydraulic dam. The sand discharge cylinder and the sand discharge hole are connected. The movable cover moves within the sand discharge cylinder to block the sand discharge hole or detach from the sand discharge hole, thus connecting the sand discharge hole, sand discharge cylinder, and sand discharge pipe. The hydraulic dam bottom hole sand discharge device provided by this invention connects the sand discharge cylinder to the sand discharge hole at the bottom of the dam surface. Compressed air is injected into the sealed space through a first inflation head, which pushes the front cover forward to block the sand discharge hole. Compressed air is injected into the annular space through a second inflation head, which pulls the front cover backward to detach from the sand discharge hole. This allows sand and gravel deposited at the bottom of the water to be automatically discharged sequentially through the sand discharge hole, sand discharge cylinder, and sand discharge pipe. The device has a simple structure, strong practicality, high sand discharge efficiency, and does not require the dam surface to be lowered, saving water flow.

Description

Technical Field

[0001] This invention relates to the field of hydraulic dam technology, and in particular to a hydraulic dam bottom hole sand discharge device. Background Technology

[0002] Hydraulic dams are water-retaining structures that block the flow of water in rivers and canals to raise the water level or regulate the flow. They can form reservoirs, raise water levels, regulate runoff, and concentrate water head for purposes such as flood control, water supply, irrigation, hydroelectric power generation, and improved navigation. Over the years, a lot of sand and gravel will accumulate on the bottom of the dam. Current technology removes sand by lowering the dam surface, which wastes a lot of water and has low sand removal efficiency.

[0003] In view of this, it is necessary to improve the existing sand removal devices to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to disclose a hydraulic dam bottom hole sand discharge device. The sand discharge cylinder is connected to the sand discharge hole at the bottom of the dam surface. Compressed air is injected into the sealed space through the first air inflator, which can push the front cover forward to block the sand discharge hole. Compressed air is injected into the annular space through the second air inflator, which can pull the front cover backward to detach it from the sand discharge hole. Thus, the sand and gravel deposited at the bottom of the water can be automatically discharged through the sand discharge hole, sand discharge cylinder and sand discharge pipe in sequence. The structure is simple, practical, and has high sand discharge efficiency. Moreover, it does not require the dam surface to be laid down, thus saving water flow.

[0005] To achieve the above objectives, the present invention provides a hydraulic dam bottom hole sand discharge device, including a sand discharge cylinder, a sand discharge pipe communicating with the sand discharge cylinder, and a movable cover located in the sand discharge cylinder; a sand discharge hole is opened on the surface of the hydraulic dam, the sand discharge cylinder and the sand discharge hole are connected, and the movable cover moves in the sand discharge cylinder to block the sand discharge hole or detach from the sand discharge hole so that the sand discharge hole, the sand discharge cylinder and the sand discharge pipe are connected.

[0006] In some embodiments, the movable cover includes a front cover, a rear cover, and a connecting rod connecting the front cover and the rear cover.

[0007] In some embodiments, a housing connected to the sand discharge cylinder is also included, the front cover moves within the sand discharge cylinder, the rear cover moves within the housing, a sealed space is formed between the rear cover and the housing, and an annular space is formed between the front cover and the rear cover.

[0008] In some embodiments, a first inflation head and a second inflation head are also provided on the housing, the first inflation head being in communication with the sealed space and the second inflation head being in communication with the annular space.

[0009] In some embodiments, the number of sand discharge pipes is two, and they are arranged symmetrically with the sand discharge cylinder as the axis of symmetry.

[0010] In some implementations, an external connecting pipe connected to the sand discharge pipe is also included.

[0011] In some embodiments, both ends of the sand discharge cylinder are provided with radially outward extending edges, and the edges are provided with a plurality of mounting holes.

[0012] In some embodiments, the sand discharge hole is located at the bottom of the hydraulic dam face.

[0013] In some embodiments, the housing is located on the backwater side of the hydraulic dam face.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The hydraulic dam bottom hole sand discharge device provided by the present invention connects the sand discharge cylinder to the sand discharge hole at the bottom of the dam surface. Compressed air is injected into the sealed space through the first air inflator, which can push the front cover forward to block the sand discharge hole. Compressed air is injected into the annular space through the second air inflator, which can pull the front cover backward to detach it from the sand discharge hole. Thus, the sand and gravel deposited at the bottom of the water can be automatically discharged through the sand discharge hole, the sand discharge cylinder and the sand discharge pipe in sequence. The structure is simple, practical and efficient, and there is no need to lay the dam surface down, which saves water flow. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a hydraulic dam bottom hole sand discharge device according to the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the bottom hole sand discharge device shown in the figure;

[0017] Figure 3 for Figure 1 A schematic diagram of the internal structure of the bottom hole sand discharge device shown in the figure;

[0018] Figure 4 for Figure 2 A cross-sectional view along the BB line. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0020] like Figure 1-4 The diagram illustrates a bottom hole sand discharge device for a hydraulic dam. The bottom hole sand discharge device 2 includes a sand discharge cylinder 4, a sand discharge pipe 5 communicating with the sand discharge cylinder 4, and a movable cover 3 located within the sand discharge cylinder 4. It also includes a housing 6 communicating with the sand discharge cylinder 4, the housing 6 being located on the backwater side 10 of the dam face 11 of the hydraulic dam 1.

[0021] The hydraulic dam 1 has a sand discharge hole (not shown) on its dam face 11. The sand discharge hole is located at the bottom of the dam face 11 of the hydraulic dam 1, so that the sand and gravel deposited on the bottom of the water can be discharged through the sand discharge hole.

[0022] Both ends of the sand discharge cylinder 4 are provided with radially outward extending edges 41, and the edges 41 are provided with a number of mounting holes (not shown), so as to facilitate the installation of one end of the sand discharge cylinder 4 to the dam surface 11 so that the sand discharge cylinder 4 and the sand discharge hole are connected, and to facilitate the connection of the other end of the sand discharge cylinder 4 to the shell 6.

[0023] The movable cover 3 includes a front cover 33, a rear cover 31, and a connecting rod 32 connecting the front cover 33 and the rear cover 31. The front cover 33 moves within the sand discharge cylinder 4, and the rear cover 31 moves within the housing 6. A sealed space 61 is formed between the rear cover 31 and the housing 6, and an annular space 62 is formed between the front cover 33 and the rear cover 31.

[0024] It also includes a first inflation head 71 and a second inflation head 72 disposed on the housing 6, wherein the first inflation head 71 is connected to the sealed space 61 and the second inflation head 72 is connected to the annular space 62.

[0025] Compressed air is injected into the sealed space 61 through the first inflation head 71, which pushes the front cover 33 forward in the sand discharge cylinder 4 until it abuts against the sand discharge hole, stopping sand discharge and preventing water from flowing from the water-facing side to the water-repellent side 10 through the sand discharge hole. Compressed air is injected into the annular space 62 through the second inflation head 72. At the same time, the injection of compressed air into the sealed space 61 through the first inflation head 71 is stopped. Under the synergistic effect of water pressure, the rear cover 31 moves backward in the shell 6 and the front cover 33 moves backward in the sand discharge cylinder 4. The front cover 33 disengages from the sand discharge hole, and the sand discharge hole, sand discharge cylinder 4 and sand discharge pipe 5 are connected. The sand and gravel deposited on the bottom of the water are automatically discharged through the sand discharge hole, sand discharge cylinder 4 and sand discharge pipe 5 in sequence. The structure is simple, practical, and has high sand discharge efficiency. It also eliminates the need for the dam surface 11 to be laid down, saving water flow.

[0026] The number of sand discharge pipes 5 is two, and they are arranged symmetrically with the sand discharge cylinder 4 as the axis of symmetry, which improves the sand discharge efficiency. It also includes an external pipe 51 connected to the sand discharge pipe 5, so as to facilitate the discharge of sand and gravel to the target location.

[0027] The movable cover 3 moves within the sand discharge cylinder 4 to block the sand discharge hole, preventing water from flowing from the upstream side to the downstream side 10 through the sand discharge hole. The movable cover 3 disengages from the sand discharge hole to connect the sand discharge hole, sand discharge cylinder 4, and sand discharge pipe 5. Sand and gravel deposited at the bottom of the water are automatically discharged sequentially through the sand discharge hole, sand discharge cylinder 4, and sand discharge pipe 5. The structure is simple, practical, and has high sand discharge efficiency. Furthermore, it eliminates the need for the dam face 11 to be lowered, thus saving water flow.

[0028] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic dam bottom hole sand discharge device, characterized in that, Includes a sand discharge cylinder (4), a sand discharge pipe (5) connected to the sand discharge cylinder (4), and a movable cover (3) located in the sand discharge cylinder (4); the hydraulic dam (1) has a sand discharge hole on the dam surface (11), the sand discharge cylinder (4) and the sand discharge hole are connected, and the movable cover (3) moves in the sand discharge cylinder (4) to block the sand discharge hole or to detach from the sand discharge hole so that the sand discharge hole, the sand discharge cylinder (4) and the sand discharge pipe (5) are connected; The movable cover (3) includes a front cover (33), a rear cover (31), and a connecting rod (32) connecting the front cover (33) and the rear cover (31); It also includes a shell (6) connected to the sand discharge cylinder (4), the front cover (33) moves in the sand discharge cylinder (4), the rear cover (31) moves in the shell (6), a sealed space (61) is formed between the rear cover (31) and the shell (6), and an annular space (62) is formed between the front cover (33) and the rear cover (31). It also includes a first inflation head (71) and a second inflation head (72) disposed on the housing (6), wherein the first inflation head (71) is connected to the sealed space (61) and the second inflation head (72) is connected to the annular space (62); The number of the sand discharge pipes (5) is two, and they are arranged symmetrically with the sand discharge cylinder (4) as the axis of symmetry; It also includes an external pipe (51) connected to the sand discharge pipe (5); Both ends of the sand discharge cylinder (4) are provided with radially outward extending edges (41), and the edges (41) are provided with a number of mounting holes; The sand discharge hole is located at the bottom of the dam face (11) of the hydraulic dam (1).

2. The hydraulic dam hole sand draining apparatus according to claim 1, wherein, The shell (6) is located on the backwater side (10) of the dam face (11) of the hydraulic dam (1).

Images