Energy dissipation and drainage structure at bottom end of stilling pool

Abstract

The energy dissipation and drainage structure at the bottom end of the stilling pool comprises a water inlet slope arranged in the stilling pool, and a first buffering groove and a second buffering groove are formed in the water inlet slope. A stilling basin bottom end energy dissipation and drainage structure is characterized in that water flow forms hydraulic jump through a drop sill entering a basin, so that high-speed water flow is mixed with water flow at the bottom end of the stilling basin, strong turbulent flow is generated in the water flow, and kinetic energy is converted into heat energy. Meanwhile, water flows into the semicircular grooves, impact of jumping water to the bottom end of the stilling pool is reduced due to the influence of the depth of the water in the grooves, and damage to the bottom end of the stilling pool is avoided. In addition, water flow forms vortexes in the semicircular grooves, rotation of the vortexes further consumes energy of the water flow, and damage of the water flow to the bottom end of the stilling pool is further reduced. The two modes of depth buffering and vortex energy dissipation of the semicircular grooves are matched with each other, a good energy dissipation and protection system for the bottom end of the stilling pool is formed, and therefore the service life of the stilling pool is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stilling basin technical field, concretely is a stilling basin bottom end energy dissipation drainage structure. BACKGROUND

[0002] When the water discharge structure is discharging, the water flow is discharged rapidly, and the kinetic energy of the water flow is large at this time, so the kinetic energy of the discharged water flow is eliminated by using the stilling basin, thereby reducing the loss caused by the impact of the water flow on the structure.

[0003] In the existing stilling basin structure, the pool-in drop is included, and when the energy of the stilling basin is utilized, the water jump position is generated by using the pool-in drop, and the surface spin and strong turbulence generated by the water jump are used to eliminate the residual energy, but the water flow continuously impacts the bottom end of the stilling basin and the pool-in drop, and the continuous impact can cause cracks on the surface of the concrete, and with the continuous erosion and impact of the water flow, the cracks can gradually expand and deepen, and the energy dissipation process of the stilling basin depends on the normal formation of the water jump to a great extent, when the bottom end of the stilling basin is damaged, the flow state of the water flow will change, the energy dissipation of the stilling basin will be weakened, and the service life of the stilling basin will be shortened.

[0004] Therefore, the utility model provides a stilling basin bottom end energy dissipation drainage structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a stilling basin bottom end energy dissipation drainage structure to solve the above problems.

[0006] To achieve the above purpose, the utility model is realized by the following technical scheme: a stilling basin bottom end energy dissipation drainage structure, which comprises a water inlet slope arranged in the stilling basin, a first buffer groove and a second buffer groove are formed in the water inlet slope, a first barrier and a second barrier are arranged at the inner side end of the stilling basin, a semicircular groove is arranged at the bottom end of the stilling basin, a plurality of third barriers are arranged in the stilling basin, and a pool-in drop is arranged at the tail end of the water inlet slope.

[0007] Preferably, the first barrier and the second barrier are triangular in cross section, and the first barrier and the second barrier are provided with rounded corners at the port.

[0008] Preferably, the first barrier is arranged at the upper right side of the first buffer groove, the oblique edge of the cross section of the first barrier is parallel to the inclined surface of the water inlet slope, the included angle between the side close to the water inlet slope of the first barrier and the inclined surface of the water inlet slope is forty-five degrees, the second barrier is arranged at the upper right side of the second buffer groove, the oblique edge of the cross section of the second barrier is parallel to the inclined surface of the water inlet slope, and the included angle between the side close to the water inlet slope of the second barrier and the inclined surface of the water inlet slope is forty-five degrees.

[0009] Preferably, the semicircular groove is away from the bottom end of the water inlet slope, and the height of one end is greater than that of the other end.

[0010] Preferably, the third barrier is uniformly and equidistantly arranged at the side end of the stilling basin, and the cross section of the third barrier is cross-shaped.

[0011] Preferably, a tail sill is arranged at the tail end in the stilling basin. Beneficial effects

[0012] The utility model provides a stilling basin bottom end energy dissipation drainage structure, has the following beneficial effects compared with prior art:

[0013] (1) a stilling basin bottom end energy dissipation drainage structure, water flow passes through the pool drop and forms a water jump, so that the high-speed water flow mixes with the water flow at the bottom end of the stilling basin, and strong turbulence is generated inside the water flow, converting kinetic energy into heat energy. At the same time, the water flow flows into the semicircular groove, and the impact of the jumping water on the bottom end of the stilling basin is reduced due to the depth of the water in the groove, avoiding damage to the bottom end of the stilling basin. In addition, the water flow forms a vortex in the semicircular groove, and the rotation of the vortex further consumes the energy of the water flow, further reducing the damage of the water flow to the bottom end of the stilling basin. The depth buffer of the semicircular groove and the vortex energy dissipation cooperate with each other, forming a good energy dissipation and protection system for the bottom end of the stilling basin, thereby prolonging the service life of the stilling basin.

[0014] (2) a stilling basin bottom end energy dissipation drainage structure, by means of the first barrier, the second barrier, the first buffer groove and the second buffer groove, the mechanical energy of the water flow is reduced twice, thereby reducing the impact force of the water flow on the pool drop, reducing the damage of the pool drop, and after two energy dissipation processes, the speed and impact force of the water flow are effectively reduced, which not only prolongs the service life of the pool drop, but also guarantees the stability and safety of the whole stilling basin system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall device structure side view of the utility model;

[0016] Figure 2 It is the overall device of the utility model;

[0017] Figure 3 It is the overall device top view of the utility model;

[0018] Figure 4 It is the overall device A-A section view of the utility model.

[0019] In the drawing, 1 is a stilling basin; 2 is a tail sill; 3 is a water inlet slope; 4 is a first barrier; 5 is a second barrier; 6 is a first buffer groove; 7 is a second buffer groove; 8 is a pool drop; 9 is a semicircular groove; 10 is a third barrier. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Embodiment one:

[0022] Please refer to Figures 1-4 A kind of energy dissipation drainage structure of stilling basin bottom end, including the water inlet slope 3 being arranged in stilling basin 1, water inlet slope 3 is arranged in stilling basin 1, first buffer groove 6 and second buffer groove 7 are set on water inlet slope 3, first fence 4 and second fence 5 are arranged in the inside side end of stilling basin 1, semicircular groove 9 is arranged in the bottom end of stilling basin 1, a plurality of third fences 10 are arranged in stilling basin 1, pool drop 8 is arranged in the tail end of water inlet slope 3.

[0023] The cross section of first fence 4 and second fence 5 is triangular, and the port of first fence 4 and second fence 5 is provided with a rounded corner.

[0024] First fence 4 is arranged at the right upper side of first buffer groove 6, the inclined edge of the cross section of first fence 4 is parallel to the inclined surface of water inlet slope 3, and the angle between the side of first fence 4 close to water inlet slope 3 and the inclined surface of water inlet slope 3 is forty-five degrees, second fence 5 is arranged at the right upper side of second buffer groove 7, the inclined edge of the cross section of second fence 5 is parallel to the inclined surface of water inlet slope 3, and the angle between the side of second fence 5 close to water inlet slope 3 and the inclined surface of water inlet slope 3 is forty-five degrees.

[0025] The height of the bottom end of semicircular groove 9 away from water inlet slope 3 is greater than that of the other end.

[0026] Third fence 10 is evenly and equidistantly arranged at the side end of stilling basin 1, and the cross section of third fence 10 is cruciform.

[0027] Tail sill 2 is arranged at the tail end in stilling basin 1.

[0028] Working principle: water flows along the water inlet slope 3, the water flow is separated by the first barrier 4, the upper water flow flows along the inclined edge of the first barrier 4 to the lower side, and the water flow between the first barrier 4 and the water inlet slope 3 is first blocked by the face of the first barrier 4, so that the water flow changes direction and flows into the first buffer groove 6 along the side of the first barrier 4, so that the water flow passes through the friction of the side wall, so that the water flow generates turbulence, the friction between the fluid increases, thereby consuming part of the mechanical energy of the water flow, and the water flow is separated by the second barrier 5, so that the water flow between the second barrier 5 and the second buffer groove 7 collides with the second barrier 5 and the second buffer groove 7, and again consumes part of the mechanical energy of the water flow, thereby reducing the impact force of the water flow on the pool drop 8, and reducing the damage to the pool drop 8.

[0029] The water flow passes through the pool drop 8 to form a water jump, so that the high-speed water flow mixes with the water flow at the bottom end of the stilling basin 1, and strong turbulence is generated inside the water flow, converting the kinetic energy of the water flow into heat energy, and the water flow flows into the semicircular groove 9, and the water flow flows into the semicircular groove 9, and the water depth is received, reducing the impact of the water on the bottom end of the stilling basin 1, avoiding damage to the bottom end of the stilling basin 1, and further cooperating with the vortex formed by the water flow in the semicircular groove 9, the rotation of the vortex further consumes the energy of the water flow, and further reduces the damage of the water flow to the bottom end of the stilling basin 1.

[0030] The water flow passes through the third barrier 10, thereby enhancing the degree of turbulence of the water flow, and further cooperating with the water jump of the tail drop 2 to dissipate the water.

[0031] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0032] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0033] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An energy dissipating drainage structure at the bottom end of a stilling basin, characterized by, The utility model provides an energy dissipation basin, which comprises a water inlet slope (3) arranged in an energy dissipation basin (1), wherein the water inlet slope (3) is provided with a first buffer groove (6) and a second buffer groove (7), the energy dissipation basin (1) is provided with a first barrier (4) and a second barrier (5) at the inner side end, the energy dissipation basin (1) is provided with a semicircular groove (9) at the bottom end, the energy dissipation basin (1) is provided with a plurality of third barriers (10), and the water inlet slope (3) is provided with an energy dissipation basin drop (8) at the tail end.

2. The energy dissipating and draining structure at the bottom end of a stilling basin according to claim 1, characterized in that: The first barrier (4) and the second barrier (5) are triangular in cross section, and the first barrier (4) and the second barrier (5) are provided with rounded corners at the ports.

3. The energy dissipating and draining structure at the bottom end of a stilling basin according to claim 2, characterized in that: The first barrier (4) is arranged at the right upper side of the first buffer groove (6), the oblique edge of the cross section of the first barrier (4) is parallel to the inclined surface of the water inlet slope (3), the included angle between the side of the first barrier (4) close to the water inlet slope (3) and the inclined surface of the water inlet slope (3) is forty-five degrees, the second barrier (5) is arranged at the right upper side of the second buffer groove (7), the oblique edge of the cross section of the second barrier (5) is parallel to the inclined surface of the water inlet slope (3), and the included angle between the side of the second barrier (5) close to the water inlet slope (3) and the inclined surface of the water inlet slope (3) is forty-five degrees.

4. The energy dissipating and draining structure at the bottom end of a stilling basin according to claim 1, characterized in that: The semicircular groove (9) is greater in height at the bottom end of the end away from the water inlet slope (3) than at the other end.

5. The energy dissipating drainage structure at the bottom end of a stilling basin according to claim 1, characterized in that: The third barriers (10) are arranged at the side end of the energy dissipation basin (1) at equal distances, and the cross section of the third barriers (10) is cruciform.

6. The energy dissipating drainage structure at the bottom end of a stilling basin according to claim 1, characterized in that: The energy dissipation basin (1) is provided with a tail drop (2) at the tail end.

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