Auxiliary energy dissipation structure for water conservancy drainage

Abstract

The utility model discloses a water conservancy drainage auxiliary energy dissipation structure which comprises a pool entering drop sill arranged on a stilling pool, a first stilling pier is arranged in the stilling pool, the side wall of the stilling pool is fixedly connected with a second stilling pier, and the side wall of the stilling pool is fixedly connected with a first fence and a second fence. A first tail sill and a second tail sill are arranged on the stilling pool, and a plurality of drainage square grooves are formed in the second tail sill; a hydraulic jump is formed through a first tail sill, so that high-speed water flow is mixed with water flow at the bottom end of a stilling pool, strong turbulent flow is generated in the water flow, kinetic energy of the water flow is converted into heat energy, and secondary hydraulic jump and secondary energy dissipation are formed through a second tail sill. And redundant water flow in the stilling pool is discharged through the drainage square groove, so that the water level at the tail sill is lowered, the effect of water pressure on the tail sill structure is reduced, and the service life of the tail sill is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water release auxiliary energy dissipation structure in the technical field of water release energy dissipation. BACKGROUND

[0002] In a water conservancy engineering system, stable water flow regime is very important, and the water flow is dissipated through a stilling basin to prolong the service life of the building, and the stilling basin is one of the common structures in water release facilities, and its main function is to promote the water flow to form an energy dissipation water jump to kill the residual energy carried by the upstream flow, so as to avoid damage to the building caused by excessive water energy.

[0003] Although the water flow can be stored in the stilling basin by height setting at the tail of the stilling basin, which helps the water jump energy dissipation, the water storage in the stilling basin will increase the load borne by the stilling basin structure, if there is too much water in the stilling basin, the water pressure will act on the tail sill structure for a long time, the load of the tail sill is large, the service life of the tail sill structure is low, secondly, the inner side of the tail sill is all the residual water before, part of the water flow directly flows out from the upper side of the tail sill structure, so that the effect of forming a water jump by the tail sill on the water flow is poor, thirdly, when the stilling basin dissipates energy, the local water flow speed is too high, which causes the water flow to locally scour the stilling basin, resulting in excessive wear.

[0004] Therefore, the utility model provides a water release auxiliary energy dissipation structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a water release auxiliary energy dissipation structure to solve the above problems.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a water release auxiliary energy dissipation structure, comprising an inlet pool drop weir arranged on a stilling basin, a first energy dissipating pier arranged in the stilling basin, a second energy dissipating pier fixedly connected to the side wall of the stilling basin, a first barrier and a second barrier fixedly connected to the side wall of the stilling basin, a first tail sill and a second tail sill arranged on the stilling basin, and a plurality of drainage square grooves formed in the second tail sill.

[0007] Preferably, the side end corner of the first energy dissipating pier is provided with a round corner, D1 of the first energy dissipating pier is 0.5 times of D2, H1 of the first energy dissipating pier is 4 times of D1, a bottom end fixed pier is fixedly connected to the bottom end of the first energy dissipating pier, the bottom end fixed pier is arranged in the stilling basin, and the cross section of the first energy dissipating pier is isosceles trapezoidal.

[0008] Wherein, D1 is the upper base length of the cross section of the first energy dissipating pier, D2 is the lower base length of the cross section of the first energy dissipating pier, and H1 is the height of the first energy dissipating pier.

[0009] Preferably, the L2 of the first barrier is 1.5 times of the L1; wherein the L1 is the length of the horizontal side of the first barrier, and the L2 is the length of the vertical side of the first barrier.

[0010] Preferably, the length B1 of the cross section of the second barrier is 0.25 times of the length of the second barrier, and the short side B2 of the cross section of the second barrier is equal to the cross section width B3.

[0011] Preferably, the first barrier is linearly and uniformly arranged on the side wall of the stilling basin, the second barrier is arranged in a staggered manner on the side wall of the stilling basin, and the first barrier is arranged on the upper side of the second barrier.

[0012] Preferably, the first tail sill is provided with an elliptical arc shape, the second tail sill is provided with an elliptical arc shape, a buffer zone is arranged between the first tail sill and the second tail sill, and the drainage square groove is arranged on the buffer zone between the first tail sill and the second tail sill. Beneficial effects

[0013] The utility model provides a kind of water conservancy discharge auxiliary energy dissipation structure.Compared with prior art, it has the following beneficial effects:

[0014] (1) a kind of water conservancy discharge auxiliary energy dissipation structure, by first tail sill, form water jump, so that the high-speed water flow and the water flow of the bottom end of stilling basin are mixed, strong turbulence is generated inside water flow, the kinetic energy of water flow is converted into heat energy, then by second tail sill form secondary water jump, energy is dissipated again, when water flow is finished, utilize drainage square groove and discharge the excess water flow of stilling basin, to reduce the water level of tail sill, reduce the effect of water pressure to tail sill structure, to prolong the service life of tail sill.

[0015] (2) a kind of water conservancy discharge auxiliary energy dissipation structure, by first energy dissipator cooperation second energy dissipator, reasonably guide water flow direction, reduce the generation of backflow and vortex, reduce the interference of water flow energy dissipation.

[0016] (3) a kind of water conservancy discharge auxiliary energy dissipation structure, by first barrier and second barrier, so that the turbulence degree of water flow is enhanced, so that water flow constantly produces shunt, convergence etc., to enhance the turbulence degree of water flow, prevent local water flow speed too high, cause water flow to local scouring of stilling basin, avoid causing local excessive wear. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall device side view of the utility model;

[0018] Figure 2 It is the oblique side view of the overall device of the utility model;

[0019] Figure 3 It is the top view of the overall device of the utility model;

[0020] Figure 4 This is a cross-sectional view (AA) of this utility model;

[0021] Figure 5 This is a side view of the first barrier structure of this utility model;

[0022] Figure 6 This is a side view of the second barrier structure of this utility model;

[0023] Figure 7 This is a cross-sectional view of the first barrier structure of this utility model;

[0024] Figure 8 This is a cross-sectional view of the second barrier structure of this utility model;

[0025] Figure 9 This is a cross-sectional schematic diagram of the first stress-relief pier of this utility model.

[0026] In the diagram: 1. Bottom fixed pier; 2. Inlet drop sill; 3. First stilling pier; 4. Second stilling pier; 5. First barrier; 6. Second barrier; 7. First tail sill; 8. Second tail sill; 9. Drainage channel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1:

[0029] Please see Figures 1-9 A hydraulic energy dissipation structure for drainage includes an inlet drop 2 set on a stilling pool, a first energy dissipation pier 3 set inside the stilling pool, a second energy dissipation pier 4 fixedly connected to the side wall of the stilling pool, a first barrier 5 and a second barrier 6 fixedly connected to the side wall of the stilling pool, a first tail sill 7 and a second tail sill 8 set on the stilling pool, and a plurality of drainage square channels 9 opened on the second tail sill 8.

[0030] The first energy dissipation pier 3 has rounded corners at its side ends. The D1 of the first energy dissipation pier 3 is 0.5 times the D2, and the H1 of the first energy dissipation pier 3 is 4 times the D1. The bottom end of the first energy dissipation pier 3 is fixedly connected to a bottom fixed pier 1, which is set inside the energy dissipation pool. The cross-section of the first energy dissipation pier 3 is an isosceles trapezoid.

[0031] like Figure 9As shown, D1 is the length of the upper base of the cross-section of the first stilling pier 3, and D2 is the length of the lower base of the cross-section of the first stilling pier 3. Figure 4 As shown, H1 is the height of the first stilling pier 3.

[0032] The L2 of the first barrier 5 is 1.5 times L1. For example... Figure 7 As shown, L1 is the horizontal side length of the first barrier 5, and L2 is the vertical side length of the first barrier 5.

[0033] like Figure 8 As shown, the cross-sectional length B1 of the second barrier 6 is 0.25 times the length of the second barrier 6, and the short side B2 of the cross-section of the second barrier 6 is equal to the cross-sectional width B3.

[0034] The first barrier 5 is linearly and uniformly arranged on the side wall of the stilling basin, while the second barrier 6 is arranged in staggered rows on the side wall of the stilling basin, with the first barrier 5 located on the upper side of the second barrier 6.

[0035] The first tail sill 7 has an elliptical arc on its gentle slope side, and the second tail sill 8 has an elliptical arc on its gentle slope side. A buffer zone is set between the first tail sill 7 and the second tail sill 8, and a drainage trough 9 is set on the buffer zone between the first tail sill 7 and the second tail sill 8.

[0036] Working principle: The water flow is buffered by the inlet drop 2, causing a hydraulic jump at the drop. The falling water mixes with the decelerated water at the bottom, thus dissipating energy. The first stilling pier 3 and the second stilling pier 4 guide the water flow direction, reducing backflow and vortex generation. The water then passes through the first barrier 5 and the second barrier 6, which enhances the turbulence, causing the water to split and merge continuously, further increasing the turbulence. Combined with the first tail sill 7, the water jumps, mixing the high-speed water with the water at the bottom of the stilling pool, generating strong turbulence within the water flow. This converts the kinetic energy of the water flow into heat energy. The second tail sill 8 then forms a second hydraulic jump, dissipating energy again. After the water flow dissipates energy, the excess water in the stilling pool is discharged through the drainage channel 9, thereby lowering the water level at the tail sill, reducing the water pressure on the tail sill structure, and extending the service life of the tail sill.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A water release auxiliary energy dissipation structure, characterized by, Including the pool drop weir (2) set on the stilling basin, the first stilling block (3) is arranged inside the stilling basin, the second stilling block (4) is fixedly connected with the side wall of the stilling basin, the first fence (5) and the second fence (6) are fixedly connected with the side wall of the stilling basin, the first tail sill (7) and the second tail sill (8) are arranged on the stilling basin, and a plurality of drainage square grooves (9) are formed in the second tail sill (8).

2. The auxiliary energy dissipating structure of claim 1, wherein: The side end corner of the first stilling block (3) is provided with a round corner, D1 of the first stilling block (3) is 0.5 times of D2, H1 of the first stilling block (3) is 4 times of D1, the bottom end fixed block (1) is fixedly connected with the bottom end of the first stilling block (3), the bottom end fixed block (1) is arranged in the stilling basin, and the cross section of the first stilling block (3) is isosceles trapezoidal. Wherein, D1 is the upper base length of the cross section of the first stilling block (3), D2 is the lower base length of the cross section of the first stilling block (3), and H1 is the height of the first stilling block (3).

3. The auxiliary energy dissipating structure of claim 1, wherein: L2 of the first fence (5) is 1.5 times of L1, wherein L1 is the length of the horizontal side of the first fence (5), and L2 is the length of the vertical side of the first fence (5).

4. The auxiliary energy dissipating structure of claim 1, wherein: The cross section length B1 of the second fence (6) is 0.25 times of the length of the second fence (6), and the short side B2 of the cross section of the second fence (6) is equal to the cross section width B3.

5. The auxiliary energy dissipating structure of claim 1, wherein: The first fence (5) is linearly and uniformly arranged on the side wall of the stilling basin, the second fence (6) is arranged in a staggered manner, and the first fence (5) is arranged on the upper side of the second fence (6).

6. The auxiliary energy dissipating structure of claim 1, wherein: The slow slope side of the first tail sill (7) is provided with an elliptical arc, the slow slope side of the second tail sill (8) is provided with an elliptical arc, a buffer zone is arranged between the first tail sill (7) and the second tail sill (8), and the drainage square groove (9) is arranged on the buffer zone between the first tail sill (7) and the second tail sill (8).

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