A stilling basin bottom plate and stilling basin

Abstract

The application discloses a stilling basin bottom plate and a stilling basin, and belongs to the stilling basin field. The stilling basin comprises a stilling basin bottom plate, which is used for draining seepage water, providing a stilling direction for water flow, and providing a stilling place for the water flow; a water inlet unit, which has a water distribution port, a water distribution port outlet, a water distribution groove, and comprises a water inlet protrusion; the water distribution port is arranged on the surface of the water inlet unit; the water inlet protrusion is arranged at a distance below the water distribution port; the water outlet is arranged below the water inlet protrusion; and the water distribution groove is connected with the water distribution port and the water distribution port outlet. A water outlet unit is arranged, and the water flow passes through the outlet after being still, and flows to the downstream. The application changes the flow direction of the water flow through the water inlet protrusion and the water distribution groove, so that the water flow collides to be still, and the shape of the stilling basin bottom plate is designed as a curved surface, so that the water flow is changed into turbulent flow, and the water flow is still.

Description

Technical Field

[0001] This utility model relates to the field of energy dissipation pools, and more particularly to an energy dissipation pool bottom plate and energy dissipation pool. Background Technology

[0002] An energy dissipation basin is an important energy dissipation facility in hydraulic engineering projects. It is used to induce a bottom-flow hydraulic jump in the downstream flow of water discharged from spillway structures, thereby eliminating kinetic energy. It has advantages such as stable flow and good energy dissipation effect.

[0003] Existing stilling basins typically utilize water turbulence to dissipate energy by installing a horizontal or inclined bottom slab downstream, allowing high-speed water flow to enter and create a hydraulic jump. Auxiliary energy dissipation structures such as tail sills and stilling blocks are often included to enhance the energy dissipation effect and reduce the basin's length and depth. However, existing stilling basins have very low energy dissipation efficiency for water. Summary of the Invention

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stilling basin bottom plate, comprising:

[0005] Drainage holes are used to collect water that seeps into the bottom slab of the stilling basin;

[0006] A drainage channel is used to drain water that seeps into the stilling basin; the drainage channel is distributed horizontally.

[0007] The bottom plate of the stilling basin is used to dissipate the force of the water flow, and the surface of the bottom plate of the stilling basin is a circular arc surface from top to bottom.

[0008] Preferably, the drainage hole extends from the interior of the stilling basin bottom plate to the surface and forms an opening on the surface;

[0009] Preferably, the drainage trough is disposed inside the bottom plate of the stilling basin, and a first opening is formed on the first side of the bottom plate of the stilling basin, and a second opening is formed on the second side of the bottom plate of the stilling basin;

[0010] Preferably, the drainage holes and drainage channels are filled with gravel to filter impurities;

[0011] Preferably, the drain hole is connected to the drain trough;

[0012] Preferably, the water flow, after rushing down from the water inlet unit, passes over the bottom plate surface, forming turbulence and thus dissipating force.

[0013] This utility model also discloses a stilling pool, comprising:

[0014] The stilling basin bottom plate;

[0015] A water inlet unit has a water outlet, a water outlet, and a water distribution channel, including a water inlet protrusion. The water outlet is located on the surface of the water inlet unit, the water inlet protrusion is located a distance below the water outlet, the water outlet is located below the water inlet protrusion, and the water distribution channel connects the water outlet and the water outlet.

[0016] The water outlet unit allows water to pass through the inlet and outlet after passing through the energy dissipation unit, flowing downstream.

[0017] Preferably, the water inlet unit, the water outlet unit, and the stilling basin are all equipped with water-blocking platforms to block the water flow;

[0018] Preferably, the water diversion outlet diverts a portion of the water flow, and the diverted water flows out from the outlet of the water diversion outlet;

[0019] Preferably, the water inlet protrusion changes the direction of the separated water flow.

[0020] This application improves the energy dissipation efficiency of the water flow by setting a water inlet, an outlet, and an inlet protrusion on the water inlet unit. After the water flow is split at the water inlet, the first and second water flows change direction and collide, thus forming turbulence. After the first layer of energy dissipation, the water flows into the stilling basin and flows over the bottom plate of the stilling basin. It flows in the direction of the upward curvature of the bottom plate of the stilling basin and forms turbulence for the second time. Attached Figure Description

[0021] Figure 1 This is a front view of the present invention;

[0022] Figure 2 Front cross-sectional view of this utility model;

[0023] Figure 3 This is a filter screen of this utility model.

[0024] The markings in the diagram are: 100 - stilling basin bottom plate; 110 - drainage trough; 120 - drainage hole; 130 - stilling basin bottom plate surface; 200 - debris collection unit; 210 - lifting rod; 220 - collar; 230 - filter screen; 300 - water inlet unit; 310 - water inlet protrusion; 320 - water distribution outlet; 330 - water distribution outlet outlet; 340 - water retaining platform; 350 - water distribution trough; 400 - water outlet unit; 500 - water outlet. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] To address the problem of low energy dissipation efficiency of stilling basins, this embodiment provides a stilling basin bottom plate and a stilling basin.

[0027] like Figure 1 As shown, the stilling basin includes: a stilling basin bottom plate 100, a debris collection unit 200, a water inlet unit 300, and a water outlet unit 400. The stilling basin bottom plate 100 mainly serves to drain infiltrated water and form a stilling chamber. The debris collection unit 200 is used to collect floating objects in the water. The water inlet unit 300 is the inlet for water to enter the stilling basin, and the water outlet unit 400 is the outlet for water after stilling.

[0028] like Figure 1 or Figure 2 As shown, the stilling basin bottom plate 100 has drainage channels 110, drainage holes 120, and a stilling basin bottom plate surface 130. The 12 drainage holes 120 are located inside the stilling basin bottom plate 100 and are evenly distributed. Because the stilling basin bottom plate 100 is not of uniform thickness, the drainage holes 120 vary in length, but all are at the same height at the ends of the stilling basin and are vertical from bottom to top. The drainage holes 120 are parallel to each other and are cylindrical chambers extending to the surface of the stilling basin bottom plate 100, forming openings. The three drainage channels 110 are horizontally arranged inside the stilling basin bottom plate 100, are parallel to each other, have the same length, and are parallel to the drainage holes 120. The ends are connected, and the drainage trough 110 is perpendicular to the drainage hole 120. The drainage trough 110 connects to both sides of the stilling pool bottom plate 100, which are the sides in the direction of water flow. The drainage trough 110 is a cylindrical chamber with both ends connected. The drainage hole 120 and the drainage trough 110 are filled with fine sand and gravel to filter out fine impurities in the water and prevent clogging. After the water flows in from the water inlet unit 300, the drainage hole 120 and the drainage trough 110 can eliminate the seepage water in the bottom plate. The stilling pool bottom plate 100 is a cement floor made of cement. The bottom surface of the stilling pool bottom plate is flat, and the bottom surface 130 of the stilling pool bottom plate is a curved surface. The stilling pool bottom plate 100 is made of cement.

[0029] like Figure 2 or Figure 3As shown, the debris collection unit 200 includes lifting rods 210, collars 220, and filter screens 230. There are two lifting rods 210, each a solid iron-aluminum alloy cylinder. The lifting rods 210 are installed at the lowest point of the stilling basin bottom plate 100, near the outermost edge of the water flow, and are fixed to the bottom surface with screws. The collars 220 are mounted on the lifting rods 210 and are donut-shaped iron rings. The two collars 220 are fitted onto the two lifting rods 210. The contact points between the collars 220 and the lifting rods 210 are six small solid iron balls. The collars 220 can be positioned on the lifting rods 210. The filter screen 230 slides up and down and is connected to two collars 220 by screws. The filter screen 230 is made of iron and is a piece of iron mesh with many small holes. It can withstand the impact of water flow without deformation. Since the lifting rod 210 has a uniform thickness from top to bottom and no protruding obstruction structure is set at the top, the collars 220 can be removed and replaced. The filter screen 230 can also be removed and replaced. Since the overall density of the filter screen 230 is lighter than water, the filter screen 230 can rise or fall with the change of water level and can always be higher than the water surface by a certain distance, thereby removing floating objects on the water surface.

[0030] like Figure 2As shown, the water inlet unit 300 includes an inlet protrusion 310 and a water-blocking platform 340, and has a water distribution port 320, a water distribution outlet 330, and a water distribution channel 350. The water inlet unit is a hexahedron, connected to the stilling basin bottom plate 100 near the bottom plate 100, and the connection is made of cast cement. All four sides of the water inlet unit are connected to the riverbank. The water inlet unit 300 is installed upstream of the stilling basin bottom plate and is made of cast cement. The angle between the connection point of the water inlet unit 300 and the stilling basin bottom plate 100 and the horizontal plane is 30 degrees. The water inlet 320 is located on the surface of the water inlet unit 300. The water inlet 320 is a horizontally rectangular opening that extends to the water-blocking platform. The water inlet 320 is parallel to the drainage channel 110. The water inlet protrusion 310 is located below the water inlet 320. The water inlet protrusion 310 is a horizontally semi-cylinder, and its direction is perpendicular to the water flow direction. The water inlet protrusion 310, water inlet 320, drainage channel 110, and water inlet outlet 330 are all parallel to each other. The water inlet protrusion 310, water inlet 320, drainage channel 110, and water inlet outlet 330 are all of the same length. The water inlet protrusion 310 is located above the water inlet outlet 330 and below the water inlet 320. The water distribution channel 350 connects the water inlet 320 and the water inlet outlet 330. The water inlet protrusion 310 is located between the water inlet 320 and the water outlet 330. The water inlet 320 diverts a portion of the water flow, which then passes through the water distribution channel 350. The water distribution channel is a chamber composed of two curved surfaces running from top to bottom. The water flow then flows to the water outlet 330, where the water flow changes direction. The water inlet protrusion 310 changes the direction of the remaining water flow, causing it to collide with the water flow from the water outlet 330, forming turbulence and thus dissipating force. The water-blocking platform 340 is installed on both sides of the water inlet unit 300, the water outlet unit 400, and the stilling basin bottom plate 130, forming a water channel to block the water flow. The water-blocking platform 340 is made of cement and has a uniform thickness throughout. The stilling basin bottom plate 130 and the water-blocking platform 340 together form an upward-opening channel, which is the stilling basin. Water flows into the stilling basin from the water inlet unit 300 and flows along the direction of the stilling basin bottom plate 130, forming turbulence. After the energy dissipation is completed, the water flows to the outlet unit 400, and then flows downstream after passing through the outlet 500. The outlet unit 400 is installed downstream of the bottom plate of the energy dissipation pool. The outlet unit is made of cement and is a tetrahedron. The side of the outlet unit 400 closest to the bottom plate of the energy dissipation pool is connected to the bottom plate of the energy dissipation pool, and the connection is made of cement. The angle between the connection between the outlet unit 400 and the bottom plate of the energy dissipation pool and the horizontal plane is 60 degrees. The other sides of the outlet unit 400 are connected to the water embankment.

Claims

1. A stilling basin bottom plate (100), characterized in that, It is installed between the inlet unit (300) and the outlet unit (400), and the stilling basin bottom plate (100) has: Drainage hole (120) is used to collect water that seeps into the bottom plate (100) of the stilling basin; A drainage trough (110) is provided for draining water that seeps into the stilling basin, and the drainage trough (110) is distributed laterally. The bottom plate (130) of the stilling pool is used to dissipate the force of the water flow. The surface of the bottom plate (130) of the stilling pool is an upward arc surface.

2. The stilling basin bottom plate (100) according to claim 1, characterized in that, The drain hole (120) extends from the interior of the stilling basin bottom plate (100) to the surface and forms an opening on the surface.

3. The stilling basin bottom plate (100) according to claim 1, characterized in that, The drainage channel (110) is located inside the stilling pool bottom plate (100), and forms a first opening on the first side of the stilling pool bottom plate (100) and a second opening on the second side of the stilling pool bottom plate (100).

4. The stilling basin bottom plate (100) according to claim 2 or 3, characterized in that, The drainage holes (120) and drainage channels (110) are filled with gravel, which is used to filter impurities.

5. The stilling basin bottom plate (100) according to claim 2 or 3, characterized in that, The drainage hole (120) is connected to the drainage channel (110).

6. The stilling basin bottom plate (100) according to claim 1, characterized in that, The water flow passes from the inlet unit (300) over the bottom plate surface, forming turbulence and thus dissipating force.

7. A stilling basin, characterized in that, include: The stilling basin bottom plate (100) according to any one of claims 1-6; A water inlet unit (300) has a water outlet (320), a water outlet (330), and a water distribution channel (350). The water inlet unit (300) includes a water inlet protrusion (310). The water outlet (320) is disposed on the surface of the water inlet unit (300). The water inlet protrusion (310) is disposed a distance below the water outlet (320). The water outlet (500) is disposed below the water inlet protrusion (310). The water distribution channel (350) connects the water outlet (320) and the water outlet (330). The water outlet unit (400) allows water to flow through the inlet and outlet after passing through the energy dissipation unit, and then flow downstream.

8. The stilling basin according to claim 7, characterized in that, The water inlet unit (300), the water outlet unit (400), and the stilling basin are all equipped with water-blocking platforms (340), which block the water flow.

9. The stilling basin according to claim 7, characterized in that, The water divider (320) divides the water flow into a first water flow and a second water flow, with the first water flow flowing out from the water divider (320).

10. The stilling basin according to claim 7, characterized in that, The water inlet protrusion (310) changes the direction of the second water flow.

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