CN215105160U - Novel arc cylinder side wall spillway energy dissipation system - Google Patents
Novel arc cylinder side wall spillway energy dissipation system Download PDFInfo
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- CN215105160U CN215105160U CN202120968267.5U CN202120968267U CN215105160U CN 215105160 U CN215105160 U CN 215105160U CN 202120968267 U CN202120968267 U CN 202120968267U CN 215105160 U CN215105160 U CN 215105160U
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Abstract
The utility model discloses an optimize rivers condition, it is little to downstream river course, bank slope erode, low in cost, simple structure is compact, and flood discharge ability is strong, and the flood does not atomize, has shortened low reaches absorption basin length, and long service life, shock resistance, durability are high, and the collection is chosen stream, ladder, arc cylinder boundary wall, surface current, underflow energy dissipation and is organically combined novel arc cylinder boundary wall spillway energy dissipation system together. The energy dissipation device consists of a transition section, steps, arc-shaped cylindrical side walls, flip buckets, sawteeth and energy dissipation buckets; water flow reaches the step and the arc-shaped cylindrical side wall section through the transition section, the flip bucket is connected to the tail end of the step, the water flow is flipped to the downstream sawtooth section, the sawtooth section is connected with the energy dissipation bucket, and the water flow finally enters the river channel through the energy dissipation bucket.
Description
Technical Field
The utility model relates to a spillway technical field specifically is a novel arc cylinder side wall spillway energy dissipation system.
Background
The reservoir is used as a water conservancy project building for storing flood and regulating water flow, and can be used for irrigation, power generation, flood control and fish culture. Can play the roles of flood control, water storage irrigation, water supply, power generation, fish culture and the like. Plays an important role in the development of national economy. The spillway serving as a flood discharge building of the reservoir acts on floods which cannot be accommodated in the planned reservoir capacity to ensure the safety of the dam body. Spillways are generally not frequently operated, but are important buildings in reservoir hubs.
Because the slope of the spillway steep groove is steeper, the water flow in the groove is mainly characterized by large flow speed, strong turbulence and unstable water surface, the mass point of the water flow is mainly inertia, and the viscous resistance effect is not obvious. The water flow at this time is particularly sensitive to boundary conditions, and if the control is not good, phenomena such as aeration, shock waves, cavitation erosion and the like can occur, so that the safety of the building and the downstream is threatened. Therefore, when the overflow section shape of the spillway and the water flow elements change sharply along the way, the requirements on the flow state control of the water flow are also put forward besides meeting the flood discharge flow. The main purpose of flood discharge and energy dissipation is to safely render large volumes of flood water downstream through dam body orifices, spillways or flood tunnels. If the flood discharge and energy dissipation problems are not well treated, not only can serious scouring be generated on the downstream riverbed, but also bad flow state can be caused, the normal operation of other buildings in the hub is influenced, and even the safety of the dam can be endangered.
With the development of hydraulic engineering causes, the energy dissipation mode has been developed from a single energy dissipation mode to a plurality of energy dissipation modes. At present, the scouring and the damage to a downstream river channel cannot be greatly reduced by any flood discharge mode. In order to reduce the washing away to low reaches river course, bank slope to reduce the length in low reaches absorption basin, provided the utility model discloses an arc cylinder side wall spillway energy dissipation system.
At present, according to the relevant data retrieval of Chinese patent, no relevant report about the energy dissipation of the spillway with the arc-shaped cylindrical side wall exists.
SUMMERY OF THE UTILITY MODEL
The technique that exists is not enough to the aforesaid, the utility model aims at providing a novel arc cylinder side wall spillway energy dissipation system that collects ladder section energy dissipation, side wall curve energy dissipation, choose to flow, underflow, surface current energy dissipation organic combination. The device has the characteristics of optimized water flow conditions, small scouring on downstream riverways and bank slopes, low manufacturing cost, simple and compact structure, strong flood discharge capacity, no atomization of flood, short length of the downstream stilling basin, long service life, impact resistance and high durability.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a novel energy dissipation system for an arc-shaped cylindrical spillway side wall is characterized by comprising a transition section, a step section, an arc-shaped cylinder, side walls, flip buckets, sawtooth sections and energy dissipation buckets, wherein the transition section is arranged between one ends of the two parallel side walls, and two ends of the transition section are respectively connected with the two side walls; the step section is arranged between two side walls, the front end of the step section is connected with the rear side of the transition section, a plurality of arc-edge cylinders which are arranged at equal intervals are arranged on the inner sides of the side walls, and the arc-edge cylinders are positioned between the side walls and the step section; the tail end of the step section is connected with a flip bucket, and two ends of the flip bucket are respectively connected with the other ends of the two side walls; the front end of the sawtooth section is connected with the rear side surface of the flip bucket; the rear section of the sawtooth section is connected with an energy dissipation ridge; the height of the step section is gradually reduced from the transition section towards the direction of the energy dissipation ridge; the flip bucket is higher than the rear end of the step section.
Preferably, the side wall has a trapezoidal structure.
Preferably, the outer side surface of the transition section is a curved surface of a three-arc curve;
preferably, the step section consists of a plurality of raised steps;
preferably, the arc cylinder is of a semicircular structure;
preferably, the flip bucket is in the form of a slant bucket;
preferably, the sawtooth section adopts V-shaped sawtooth protruding upwards;
preferably, the energy dissipation sill is a forward or reverse energy dissipation sill.
The utility model has the advantages that the structure is compact, the energy dissipation is basically carried out from the flood discharge, and simultaneously, a plurality of energy dissipation modes such as the trajectory, the surface flow and the bottom flow are utilized, and the energy dissipation efficiency is higher;
when flood is released in the spillway, most energy is eliminated by the step section and the arc-shaped cylindrical curve side wall, so that the length of the downstream stilling pool is greatly reduced, the manufacturing cost is saved, and the structure is simple and convenient to construct;
when the water flow passes through the flip bucket and reaches the sawtooth section, most energy is consumed, the downstream is slightly scoured, and the protection of bank slopes and riverbeds is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a three-dimensional structure diagram of a novel arc-shaped cylindrical side wall spillway energy dissipation system provided by the utility model;
fig. 2 is a cross-sectional view of a novel arc-shaped cylindrical sidewall spillway energy dissipation system provided by the present invention;
fig. 3 is a front view of a novel arc-shaped cylindrical sidewall spillway energy dissipation system provided by the present invention;
figure 4 is the utility model provides a pair of novel arc cylinder side wall spillway energy dissipation system's top view.
Description of reference numerals:
the energy dissipation device comprises a transition section 1, a step section 2, an arc-shaped cylinder 3, a side wall 4, a flip bucket 5, a sawtooth section 6 and an energy dissipation bucket 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-4, a novel arc-shaped cylindrical spillway energy dissipation system with side walls comprises a transition section 1, a step section 2, an arc-shaped cylinder 3, side walls 4, flip buckets 5, a sawtooth section 6 and an energy dissipation bucket 7, wherein the transition section 1 is arranged between one ends of two parallel side walls 4, and two ends of the transition section 1 are respectively connected with the two side walls 4; the step section 2 is arranged between two side walls 4, the front end of the step section 2 is connected with the rear side of the transition section 1, a plurality of arc-side cylinders which are arranged at equal intervals are arranged on the inner side of each side wall 4, and the arc-side cylinders are positioned between the side walls 4 and the step section 2; the tail end of the step section 2 is connected with a flip bucket 5, and two ends of the flip bucket 5 are respectively connected with the other ends of the two side walls 4; the front end of the sawtooth section 6 is connected with the rear side surface of the flip bucket 5; the rear section of the sawtooth section 6 is connected with an energy dissipation ridge 7; the height of the step section 2 is gradually reduced from the transition section 1 to the direction of the energy dissipation ridge 7; the height of the flip bucket 5 is higher than that of the rear end of the step section 2.
Further, the side wall 4 has a trapezoidal structure.
Further, the outer side surface of the transition section 1 is a curved surface of a three-arc curve;
further, the step section 2 is composed of a plurality of raised steps;
further, the arc-shaped cylinder 3 is of a semicircular structure; the connection with the side wall 4 is better;
further, the flip bucket 5 is in the form of an inclined nose bucket; after water flows through the nose ridge, the water tongue is effectively guided, the air diffusivity is improved, the water tongue can smoothly return to a narrow river channel, and the single-width flow is reduced, so that the washing of the incident water tongue on a downstream riverbed is weakened;
further, the sawtooth section 6 adopts V-shaped sawtooth protruding upwards;
further, the energy dissipation bank 7 is a forward or reverse energy dissipation bank 7.
The front end of the spillway is provided with a transition section 1, the transition section 1 is connected with a step section 2, energy consumption is realized by using drop water of the step section 2, meanwhile, arc-shaped cylinders 3 are built on the inner sides of side walls 4 on two sides of the step section 2, the arc-shaped cylinders 3 are compactly arranged one by one, and energy dissipation is realized by using vortex and collision generated when water flow meets the arc-shaped cylinders 3; the most basic water flow form of the energy dissipation is circular flow, the solid side wall of the circular flow has larger centrifugal force and is contacted with the atmosphere, the whole water flow does not have negative pressure, the flow speed is rapidly reduced, the cavitation property is better, and cavitation erosion cannot be generated; the water head loss is increased, meanwhile, the water flow is smoother, the flow velocity of the water flow is reduced, the flip bucket 5 is connected to the tail of the step section 2, partial energy is eliminated through diffusion, turbulence and aeration of jet flow in the air by means of flip bucket energy dissipation, the sawtooth section 6 is connected to the back of the flip bucket 5, the water flow falls on the sawtooth section 6, the water flow is enabled to generate hydraulic jump in a limited range, energy is consumed through internal friction, aeration and impact of the water flow, the energy dissipation bucket 7 is connected to the last of the sawtooth section 6, the main flow is selected to the water surface by means of the energy dissipation bucket 7, and complementary energy is eliminated through main flow surface diffusion, bottom rotary rolling and surface rotary rolling.
The spillway can be cast by concrete; rivers reach ladder section 2 and 3 lateral walls of arc cylinder 4 sections through changeover portion 1, connect flip 5 at 2 end in ladder section, choose rivers to low reaches sawtooth section 6, connect energy dissipation bank 7 behind the sawtooth section 6, and rivers get into the river course through energy dissipation bank 7 at last.
The arc-shaped cylinder 3 does not have a specific size and shape and can be arranged according to actual conditions; and the distance of the arc-shaped cylinder 3 can be set arbitrarily according to the actual situation.
The size, the height and the width of the step section 2 are not limited and are set according to the actual situation.
The size and the shape of the sawtooth section 6 are not limited and are set according to actual conditions.
The utility model discloses a design optimization rivers condition erodees little to low reaches river course, bank slope, low in cost, and simple structure is compact, and the flood discharge ability is strong, and the flood does not atomize, has shortened low reaches absorption basin length, and long service life, shock resistance, durability are high, and the collection is chosen stream, ladder, 3 side walls of arc cylinder 4, surface flow, underflow energy dissipation and is organically combined together.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A novel energy dissipation system for an arc-shaped cylindrical spillway side wall is characterized by comprising a transition section, a step section, an arc-shaped cylinder, side walls, flip buckets, sawtooth sections and energy dissipation buckets, wherein the transition section is arranged between one ends of the two parallel side walls, and two ends of the transition section are respectively connected with the two side walls; the step section is arranged between two side walls, the front end of the step section is connected with the rear side of the transition section, a plurality of arc-edge cylinders which are arranged at equal intervals are arranged on the inner sides of the side walls, and the arc-edge cylinders are positioned between the side walls and the step section; the tail end of the step section is connected with a flip bucket, and two ends of the flip bucket are respectively connected with the other ends of the two side walls; the front end of the sawtooth section is connected with the rear side surface of the flip bucket; the rear section of the sawtooth section is connected with an energy dissipation ridge; the height of the step section is gradually reduced from the transition section towards the direction of the energy dissipation ridge; the flip bucket is higher than the rear end of the step section.
2. The system of claim 1, wherein the side wall is of a trapezoidal configuration.
3. The system of claim 2, wherein the outer surface of the transition section is a curved surface of a three-arc curve.
4. A novel arc-shaped cylindrical sidewall spillway energy dissipation system as defined in claim 3, wherein said stepped section is formed of a plurality of raised steps.
5. The novel energy dissipation system for spillways with arc-shaped cylindrical side walls as claimed in claim 4, wherein the arc-shaped cylinder is of a semicircular structure.
6. The system of claim 5, wherein the flip bucket is in the form of a sloped sill.
7. The novel arc-shaped cylindrical sidewall spillway energy dissipation system of claim 6, wherein the sawtooth section is provided with V-shaped sawteeth protruding upwards.
8. The novel arc-shaped cylindrical sidewall spillway energy dissipation system as claimed in any one of claims 1-7, wherein the energy dissipation bank is a forward or reverse energy dissipation bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120968267.5U CN215105160U (en) | 2021-05-08 | 2021-05-08 | Novel arc cylinder side wall spillway energy dissipation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120968267.5U CN215105160U (en) | 2021-05-08 | 2021-05-08 | Novel arc cylinder side wall spillway energy dissipation system |
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| CN215105160U true CN215105160U (en) | 2021-12-10 |
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| CN202120968267.5U Active CN215105160U (en) | 2021-05-08 | 2021-05-08 | Novel arc cylinder side wall spillway energy dissipation system |
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2021
- 2021-05-08 CN CN202120968267.5U patent/CN215105160U/en active Active
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