V-type energy dissipator for ship lock dispersion water delivery system and arrangement structure thereof

Abstract

The application discloses a V-shaped energy dissipator for a ship lock dispersion water delivery system and a layout structure thereof. The V-shaped energy dissipator comprises a V-shaped sill body, the V-shaped sill body comprises two vertical sills, the two vertical sills are vertically arranged and one side of the two vertical sills is correspondingly connected to form a V-shaped structure, and a plurality of first water-permeable holes penetrating through end surfaces of the vertical sills are arranged on the vertical sills. The layout structure comprises a layout structure, a lock chamber surrounded by two lock walls, a plurality of side branch holes arranged on the lock walls, the side branch holes on the two lock walls being arranged in a staggered mode, and a plurality of V-shaped energy dissipators described in the foregoing, the V-shaped sill bodies being arranged in a one-to-one correspondence with the side branch holes, the openings of the V-shaped sill bodies facing away from the side branch holes and the V-shaped sill bodies being opposite to the side branch holes, and the height of the V-shaped sill body being 1-1.1 times the height of the side branch hole. The application can effectively disperse high-intensity jets in the horizontal dimension, weaken the local concentration of turbulent flow, weaken vertical vortices, and thus improve the berthing conditions of ships in the lock chamber.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic technology of lock water conveyance system, and specifically relates to a V-shaped energy dissipator and its arrangement structure for a decentralized water conveyance system of a lock. Background Technology

[0002] Inland waterway transportation is an important component of the comprehensive transportation system and the comprehensive utilization of water resources. It plays a vital role in promoting the economic development of river basins, optimizing industrial layout, and facilitating opening up to the outside world. Ship locks are crucial water conservancy hubs in inland waterway transportation. A ship lock is a navigation structure installed on a navigable river to help vessels overcome water level differences caused by dam construction. Its principle is to control the rise and fall of the water level inside the lock chamber between the upstream and downstream water levels through a water conveyance system buried on both sides or at the bottom of the lock chamber, completing the process of filling or releasing water into the lock chamber. During this process, vessels inside the lock chamber rise or fall with the water level, thus overcoming the water level difference.

[0003] However, with the continuous increase in the design head of the lock, the jet flow velocity through the side branch holes is often greater due to the high head pressure during the lock filling process, which easily generates strong turbulence. This results in strong local water flow turbulence in the lock chamber and uneven distribution of overall water flow velocity, which has an adverse effect on the berthing of ships and seriously affects the safety of ships.

[0004] Chinese Patent CN 113863266 A discloses an inverted F-shaped energy dissipator and its arrangement method for a decentralized water conveyance system in a lock. This inverted F-shaped energy dissipator consists of a bottom plate, a high sill, and a low sill. The width of the bottom plate is the same as the width of the open channel. The high sill is fixed to one end of the bottom plate, and the low sill is fixed to the surface of the bottom plate. The height of the high sill is equal to the height of the channel, and the height of the low sill is 0.5 to 1 times the height of the side support hole. The distance between the low sill and the side support hole is 0.4 to 0.8 times the width of the bottom plate. This invention's energy dissipator, composed of a low sill, a high sill, and a bottom plate with specifically designed dimensions, can effectively dissipate energy in the water, thereby ensuring a uniform distribution of water flow within the lock chamber, guaranteeing stable berthing conditions for ships within the lock chamber, and increasing water conveyance efficiency. However, since this energy dissipation device is mainly optimized for vertical energy dissipation, and only one or two long open channels are used for energy dissipation on the horizontal scale, the water flow from different jet holes is still uneven on the horizontal scale, and the high-speed water flow is distributed in an interlaced manner. Therefore, the problem of local strong turbulence between different outlet holes on the horizontal scale is not well solved. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, the present invention aims to provide a V-shaped energy dissipator and its arrangement structure for a decentralized water conveyance system in a ship lock. This invention can effectively disperse high-intensity jets on a horizontal scale, reduce localized turbulence concentration, and reduce vertical vortices, thereby improving the berthing conditions of ships within the lock chamber.

[0006] The technical solution of this invention is implemented as follows: A V-shaped energy dissipator for a decentralized water conveyance system of a lock includes a V-shaped sill body. The V-shaped sill body includes two vertical sills, which are vertically arranged and connected on one side to form a V-shaped structure. Several first water-permeable holes are provided on the vertical sills, penetrating both ends of the vertical sills.

[0007] Furthermore, the two uprights are transitioned by an arc, thereby forming an arc-shaped threshold between the two uprights, and the arc-shaped threshold is provided with several second water-permeable holes.

[0008] Furthermore, the top of the V-shaped threshold body is provided with a top plate, which is V-shaped and horizontally positioned on the outside of the V-shaped threshold body and connected to the edge of the V-shaped threshold body. The upper surface of the top plate is flush with the upper surface of the V-shaped threshold body, and the top plate is provided with a number of third water-permeable holes penetrating the upper and lower ends of the top plate.

[0009] Furthermore, the lower edge of the top plate on the side away from the V-shaped sill body has a slope that is inclined downwards.

[0010] Furthermore, the width of the top plate is 0.2 to 0.5 times the height of the V-shaped sill body.

[0011] The present invention also provides a V-shaped energy dissipator arrangement structure for a decentralized water conveyance system of a lock, including a lock chamber enclosed by two lock walls, with a plurality of side support holes provided on the lock walls, the side support holes on the two lock walls being arranged alternately, and a plurality of the aforementioned V-shaped energy dissipators, the V-shaped sill body being set at the bottom of the lock chamber and corresponding to the side support holes one by one, the opening of the V-shaped sill body facing away from the side support holes, and the V-shaped sill body and the side support holes facing each other, the height of the V-shaped sill body being 1 to 1.1 times the height of the side support holes.

[0012] Furthermore, the distance between the V-shaped sill body and the side support hole is 0.05 to 0.1 times the width of the gate chamber.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The V-shaped energy dissipator of the present invention consists of a V-shaped sill body and a top plate. During energy dissipation, on a horizontal scale, part of the jet from the side branch holes is ejected through the first and second water-permeable holes of the arc-shaped sill, while the other part is dispersed to both sides due to the influence of the vertical sill. This can effectively reduce the local concentration of turbulence. At the same time, the water flow on both sides can collide with the water body diverted from the V-shaped energy dissipator corresponding to the adjacent side branch holes and gradually weaken, or the turbulence can gradually dissipate over a long distance.

[0014] On a vertical scale, after part of the jet from the side branch hole collides with the top plate, it generates vortex energy dissipation in the water below the top plate and also collides with the jet from the side branch hole to dissipate energy. The flow velocity of the other part of the water passing through the third permeable hole of the top plate will be significantly reduced, thereby realizing water flow energy dissipation and adjusting the water flow structure, so that the water flow is more evenly distributed in the lock chamber, which can effectively improve the berthing conditions of ships in the lock chamber. Attached Figure Description

[0015] Figure 1 - A schematic diagram of the structure of a V-shaped energy dissipator.

[0016] Figure 2 - A three-dimensional view of the arrangement structure of this invention.

[0017] Figure 3 -Top view of the arrangement structure of the present invention Among them: 01-V-shaped energy dissipation structure; 1-V-shaped sill body; 2-first water permeable hole; 3-second water permeable hole; 4-top plate; 5-third water permeable hole; 6-slope surface; 02-gate wall; 03-side support hole; 04-gate chamber. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] See Figure 1 A V-shaped energy dissipator for a decentralized water conveyance system of a lock includes a V-shaped sill body 1. The V-shaped sill body 1 includes two vertical sills, which are vertically arranged and connected on one side to form a V-shaped structure. Several first water-permeable holes 2 are provided on the vertical sills, penetrating both ends of the vertical sills.

[0020] When using this V-shaped energy dissipator, the V-shaped sill body is set at the bottom of the gate chamber and directly opposite the side support hole on the gate wall. In this way, the high-intensity jet that enters the gate chamber from the side support hole is blocked by the V-shaped sill body and undergoes a certain degree of energy dissipation. At the same time, the high-intensity jet disperses to both sides under the action of the sill, which can effectively reduce the local concentration of turbulence. Some of the jet also diffuses to the middle of the gate chamber through the first water permeable hole and gradually dissipates by colliding with the water flow in the gate chamber.

[0021] In practice, the two uprights are transitioned by an arc, thus forming an arc-shaped threshold between them. The arc-shaped threshold is provided with several second permeable holes 3. The two uprights and the arc-shaped threshold of the V-shaped threshold body are integrally formed and supported.

[0022] Here, the two sills are connected by an arc, which makes the water flow stable when passing through the V-shaped energy dissipation structure.

[0023] In specific implementation, the top of the V-shaped threshold body 1 is provided with a top plate 4. The top plate 4 is V-shaped and is horizontally arranged on the outside of the V-shaped threshold body 1 and connected to the edge of the V-shaped threshold body 1. The upper surface of the top plate 4 is flush with the upper surface of the V-shaped threshold body 1. The top plate 4 is provided with a number of third water-permeable holes 5 that penetrate the upper and lower ends of the top plate 4.

[0024] In this way, the jet injected into the side branch hole will collide with the top plate in the vertical direction, and vortex energy dissipation will occur below the top plate. At the same time, the water will also collide with the jet from the side branch hole, thus achieving energy dissipation.

[0025] In specific implementation, the lower edge of the top plate 4 on the side away from the V-shaped threshold body 1 has a slope 6 that is inclined from top to bottom.

[0026] Here, a slope is set at the lower edge of the top plate, which facilitates the downward movement of water that collides with the top plate and its collision with the jet from the side branch holes, thereby dissipating energy and enhancing the energy dissipation effect.

[0027] In a specific implementation, the top plate 4 is characterized by having a width that is 0.2 to 0.5 times the height of the V-shaped sill body 1.

[0028] See Figure 1 , Figure 2 and Figure 3 A V-shaped energy dissipator arrangement structure for a decentralized water conveyance system of a lock includes a lock chamber 04 enclosed by two lock walls 02. Several side support holes 03 are provided on the lock walls 02, and the side support holes 03 on the two lock walls 02 are arranged alternately. It also includes several V-shaped energy dissipators 01 as described above. The V-shaped sill body 1 is set at the bottom of the lock chamber 04 and is arranged in a one-to-one correspondence with the side support holes 03. The opening of the V-shaped sill body 1 faces away from the side support holes 03, and the V-shaped sill body 1 is directly opposite the side support holes 03. The height of the V-shaped sill body 1 is 1 to 1.1 times the height of the side support holes 03.

[0029] Since the height of the water injected into the gate chamber from the side branch hole is basically equal to the height of the side branch hole, if the V-shaped sill body is lower than the height of the side branch hole, some water cannot be dissipated, and the turbulence of the undissipated water will be amplified vertically. If the height of the V-shaped sill body is too high, it will undoubtedly increase the water demand of the gate chamber while ensuring the effective water depth of the gate chamber (from the top of the V-shaped energy dissipator to the water surface).

[0030] The jet from the side branch hole is affected by the two vertical sills and disperses to both sides. To further dissipate energy, the included angle θ between the two vertical sills can be reasonably set so that the water flow on both sides can collide with the water flowing out of the V-shaped energy dissipation device corresponding to the adjacent side branch hole to dissipate energy.

[0031] In specific implementation, the distance between the V-shaped sill body 1 and the side support hole 03 is 0.05 to 0.1 times the width of the gate chamber 04.

[0032] This design allows the jet entering the gate chamber to be dissipated as quickly as possible, while also effectively preventing some of the jet from flowing back and causing impact damage to the gate wall during V-shaped energy dissipation.

[0033] Finally, it should be noted that the above embodiments of the present invention are merely illustrative examples and not intended to limit the implementation of the invention. Those skilled in the art can make other variations and modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this invention are still within the scope of protection of this invention.

Claims

1. A V-shaped energy dissipation structure for a decentralized water conveyance system of a ship lock, comprising a lock chamber enclosed by two lock walls, wherein the lock walls are provided with a plurality of side support holes, and the side support holes on the two lock walls are arranged alternately, characterized in that, The system includes several V-shaped energy dissipators, each comprising a V-shaped sill body. Each V-shaped sill body consists of two vertical sills connected on one side to form a V-shape. Each sill has several first permeable holes penetrating both ends. The V-shaped sill body is positioned at the bottom of the gate chamber, corresponding to the side support holes. The opening of the V-shaped sill body faces away from the side support holes, and the V-shaped sill body is directly opposite the side support holes. The height of the V-shaped sill body is 1 to 1.1 times the height of the side support holes. The two sills are connected by an arc, forming an arc-shaped sill between them. The arc-shaped sill has several second permeable holes.

2. The V-shaped energy dissipation structure for a decentralized water conveyance system in a ship lock according to claim 1, characterized in that, The distance between the V-shaped sill body and the side support hole is 0.05 to 0.1 times the width of the gate chamber.

3. The V-shaped energy dissipation structure for a decentralized water conveyance system in a ship lock according to claim 1, characterized in that, The top of the V-shaped threshold body is provided with a top plate. The top plate is V-shaped and is horizontally set on the outside of the V-shaped threshold body and connected to the edge of the V-shaped threshold body. The upper surface of the top plate is flush with the upper surface of the V-shaped threshold body. The top plate is provided with several third water-permeable holes that penetrate the upper and lower ends of the top plate.

4. The V-shaped energy dissipation structure for a decentralized water conveyance system in a ship lock according to claim 3, characterized in that, The lower edge of the top plate on the side away from the V-shaped sill body has a slope that is inclined downwards.

5. The V-shaped energy dissipation structure for a decentralized water conveyance system in a ship lock according to claim 4, characterized in that, The width of the top plate is 0.2 to 0.5 times the height of the V-shaped sill body.

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