CN211143018U

CN211143018U - Energy dissipation structure of spillway

Info

Publication number: CN211143018U
Application number: CN201922062296.0U
Authority: CN
Inventors: 覃辉煌; 吴翠萍; 薛忠强; 余奇友
Original assignee: Shenzhen Dongshen Engineering Co ltd
Current assignee: Shenzhen Dongshen Engineering Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-07-31
Anticipated expiration: 2029-11-23

Abstract

The utility model relates to a technical field of spillway relates to an energy dissipation structure of spillway, connect the water outlet channel in shaft one end including shaft and perpendicular ground, the shaft lower extreme is provided with the energy dissipation well, the lower extreme of energy dissipation well is less than energy dissipation bottom end is less than water outlet channel, be provided with a plurality of energy dissipation rings, a plurality of along vertical direction on the energy dissipation well inner wall the internal diameter of energy dissipation ring reduces from bottom to bottom gradually. The utility model discloses has following effect: flood will fall on the energy dissipation ring, and flood falls behind step by step, will carry out certain energy dissipation, and flood will flow into to the energy dissipation well this moment, just can flow into to the water channel along with the water level rises this moment, through carrying out the energy dissipation when falling flood for impact force when flood assaults the shaft bottom reduces, thereby reduces the possibility that the shaft damaged.

Description

Energy dissipation structure of spillway

Technical Field

The utility model belongs to the technical field of the technique of spillway and specifically relates to an energy dissipation structure of spillway is related to.

Background

The spillway is the flood control equipment of water conservancy buildings such as reservoir, builds one side at the dam more, like a vat, and when the water level exceeded safety limit in the reservoir, water just flowed downstream from the spillway, prevented that the dam from being destroyed. Under the influence of factors in various aspects such as geological conditions, surrounding environment and the like, spillways are often designed into shaft type spillways for small and medium-sized reservoirs for irrigation and power generation, and flood falls into the shafts and is discharged after the water level rises and sinks through the shafts.

The Chinese patent with the publication number of CN103469772B discloses a vertical shaft type spillway for a reservoir, which comprises a vertical shaft arranged on a reservoir dam, wherein the vertical shaft comprises a water inlet at the upper part, a vertical shaft section connected with the water inlet and an energy dissipation well arranged below the vertical shaft section; the lower part of the vertical shaft is provided with a water-returning hole which is connected with a step-type discharge groove, the step-type discharge groove is connected with a stilling basin, and flood is discharged after energy dissipation through the vertical shaft section and the energy dissipation well.

However, in the practical application process of the spillway, the interior of the vertical shaft is hollow before flood discharge, once flood discharge is started, a large amount of flood can directly rush into the vertical shaft and directly impact the shaft bottom, the flood can act on concrete at the shaft bottom, the vertical shaft is often damaged, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an energy dissipation structure of spillway can carry out the energy dissipation when flood whereabouts is in to the shaft, reduces the effort that the flood impacted the shaft bottom, reduces the possibility that the shaft damaged.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an energy dissipation structure of spillway, includes the shaft and connects perpendicularly in the play water passageway of shaft one end, the shaft lower extreme is provided with the energy dissipation well, the lower extreme of energy dissipation well is less than energy dissipation shaft bottom end is less than go out the water passageway, be provided with a plurality of energy dissipation rings along vertical direction on the energy dissipation well inner wall, it is a plurality of the internal diameter of energy dissipation ring reduces from last to bottom gradually.

Through adopting above-mentioned technical scheme, the water level rises the back, and the flood will overflow the shaft upper end, and the flood will fall along the shaft, and at first the flood will fall on the energy dissipation ring, and the flood falls behind step by step, will carry out certain energy dissipation, and the flood will flow into to the energy dissipation well this moment, just can flow into to the water channel along with the water level rises this moment, through carrying out the energy dissipation when falling to the flood for the impact force when the flood strikes the shaft bottom reduces, thereby reduces the possibility that the shaft damaged.

The present invention may be further configured in a preferred embodiment as: the shaft upper end is loudspeaker form, be provided with a plurality of water conservancy diversion pieces along circumference on the shaft upper end inner wall, it is a plurality of one end of water conservancy diversion piece sets up along the slope of circular arc direction.

Through adopting above-mentioned technical scheme, when the flood crosses the shaft upper end, will be to the shaft inner wall on, and under the water conservancy diversion effect of water conservancy diversion piece, the flood will be the spiral helicine shaft inner wall of laminating whereabouts, at the in-process of whereabouts, after the effect between flood and the shaft inner wall, also can play the energy dissipation effect, further reduce the effort of flood to the shaft bottom.

The present invention may be further configured in a preferred embodiment as: an energy dissipation pool is arranged at one end, far away from the vertical shaft, of the water outlet channel, the middle of the energy dissipation pool is arranged in a downward concave mode, and a water drainage channel is arranged on one side, far away from the water outlet channel, of the energy dissipation pool.

The sludge is always in an open state before the water is not drained, and a large amount of sludge is formed just after the flood is flushed down, and if the sludge is directly drained, the sludge in the downstream is increased. Through adopting above-mentioned technical scheme, the flood of rushing out in the water outlet channel will be in the energy dissipation pond and continue for a period for mud can deposit to the energy dissipation pond downside, and other floods will be discharged through the sluicing passageway, reduce mud and get into the volume in low reaches.

The present invention may be further configured in a preferred embodiment as: the water draining device is characterized in that shunting piles are arranged on the water draining channel at intervals, the cross sections of the shunting piles are isosceles triangles, the tips of the shunting piles face one side of the energy dissipation pool, shunting channels are formed in the two waist surfaces of the shunting piles, and the width of each shunting channel is gradually increased from the tip to one side of the ground.

Through adopting above-mentioned technical scheme, when sluicing, the flood will flow through between two reposition of redundant personnel posts, when carrying out the energy dissipation, also can shunt the flood, reduces flood and concentrates towards the possibility that leads to low reaches riverbed earth to run off to the setting of subchannel can make the flood be the branching form and discharge.

The present invention may be further configured in a preferred embodiment as: one side of energy dissipation pond is provided with the sludge discharge pipe, just be located on the energy dissipation pond lateral wall the sludge discharge pipe lower extreme is provided with the suction hood that is tubaeform, the one end of sludge discharge pipe is connected with the sludge pump.

Through adopting above-mentioned technical scheme, can take the mud of energy dissipation bottom of the pool portion out through the sludge pump to suction cover upside can avoid mud to die the tip is stifled, also can be convenient for the mud pipe suction.

The present invention may be further configured in a preferred embodiment as: the energy dissipation pool is characterized in that a connecting cylinder is arranged on the inner wall of the energy dissipation pool in a sleeved mode and arranged on the sludge discharge pipe, the suction hood is connected to the lower end of the connecting cylinder, and the sludge discharge pipe is detachably connected to the connecting cylinder.

Through adopting above-mentioned technical scheme, when in mud suction process, mud probably blocks up the sludge discharge pipe, leads to the sludge discharge pipe not in the same direction as smooth at the in-process of suction, can pull out the back with the sludge discharge pipe from the connecting cylinder, dredge to the sludge discharge work of being convenient for.

The present invention may be further configured in a preferred embodiment as: an inserting ring is arranged on the inner wall of the lower end of the connecting cylinder, and an inserting ring groove for embedding one end of the connecting cylinder is formed in the inserting ring.

Through adopting above-mentioned technical scheme, when inserting the mud pipe to the connecting cylinder in, will imbed to the grafting annular in, the grafting ring can be filled the clearance between connecting cylinder inner wall and the mud pipe outer wall to make when the suction is taken out, the mud pipe can pump more high-efficiently.

The present invention may be further configured in a preferred embodiment as: one end of the sludge discharge pipe, which is far away from the bottom of the energy dissipation pool, is higher than the connecting cylinder, and a mounting ring is arranged on the part of the sludge discharge pipe, which is higher than the connecting cylinder, and the mounting ring is fixed at the end part of the connecting cylinder through a fixing bolt.

Through adopting above-mentioned technical scheme, the back is connected with the connecting cylinder to the collar, can make the mud pipe fix on the connecting cylinder comparatively steadily, and at this moment, can not cause the mud pipe to produce great rocking yet at the during operation.

To sum up, the utility model discloses a following at least one useful technological effect:

1. flood falls on the energy dissipation ring, after the flood falls step by step, certain energy dissipation is carried out, the flood flows into the energy dissipation well at the moment, and then flows into the water outlet channel along with the rising of the water level, and the impact force of the flood when impacting the well bottom is reduced by dissipating the energy of the flood when the flood falls, so that the possibility of damage of the well shaft is reduced;

2. under the flow guiding action of the flow guiding sheets, flood will fall in a spiral shape and attach to the inner wall of the vertical shaft, and in the falling process, after the flood acts on the inner wall of the vertical shaft, the energy dissipation effect can be achieved, and the acting force of the flood on the shaft bottom is further reduced;

3. flood rushing out from the water outlet channel can be stored in the energy dissipation pool for a period of time, so that sludge can be precipitated to the lower side of the energy dissipation pool, and the rest flood can be discharged through the water drainage channel, so that the downstream amount of the sludge is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of a part of the structure of a shaft;

figure 3 is a partial cross-sectional view of the shaft showing the energy dissipating rings;

FIG. 4 is a schematic view showing the structure of a drainage passage;

FIG. 5 is a schematic structural view of an energy-dissipating pool;

fig. 6 is a schematic view of the connection relationship between the sludge discharge pipe and the connecting cylinder.

Reference numerals: 100. a shaft; 110. a water outlet channel; 120. a flow deflector; 130. an energy dissipation well; 131. an energy dissipation ring; 140. an energy dissipation pool; 141. a drainage channel; 142. shunting piles; 143. a shunt channel; 144. a connecting cylinder; 145. a suction hood; 146. a sludge discharge pipe; 147. a plug-in ring; 148. inserting ring grooves; 149. a mounting ring; 150. a sludge pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

An energy dissipation structure of a spillway, referring to fig. 1 and 2, comprises a vertical shaft 100 and a water outlet channel 110 vertically connected to one end of the vertical shaft 100, wherein the upper end of the vertical shaft 100 is horn-shaped, a plurality of flow deflectors 120 are circumferentially arranged on the inner wall of the upper end of the vertical shaft 100, the flow deflectors 120 are integrally cast and formed on the inner wall of the upper end of the vertical shaft 100, and one ends of the flow deflectors 120 are obliquely arranged along an arc direction. After the flood overflows the upper end of the shaft 100, the flood will flow along the inner wall of the shaft and will fall spirally along the inner wall of the shaft 100 under the guiding action of the flow deflectors 120, and the flood will dissipate energy when falling.

Referring to fig. 1 and 3, the lower end of the shaft 100 is provided with an energy dissipation well 130, the bottom end of the energy dissipation well 130 is lower than the water outlet channel 110, a plurality of energy dissipation rings 131 are vertically arranged on the inner wall of the energy dissipation well 130, and the inner diameters of the plurality of energy dissipation rings 131 are gradually reduced from top to bottom. When the flood falls from the shaft 100, the flood falls on the energy dissipation rings 131 along the inner wall, and after the flood passes through each energy dissipation ring 131 step by step, the flow velocity of the flood is reduced and the flood flows into the energy dissipation well 130, so that the impact force on the bottom of the well is reduced, and the damage is avoided from being too fast.

Referring to fig. 1 and 4, an energy dissipation pool 140 is disposed at one end of the water outlet channel 110 away from the vertical shaft 100, the middle of the energy dissipation pool 140 is recessed downward, flood water will firstly flow into the energy dissipation pool 140, and sludge mixed with the flood water will be retained at the bottom of the energy dissipation pool 140. And a drainage channel 141 is provided at a side of the energy dissipation pool 140 away from the water outlet channel 110. The drainage channel 141 is provided with the diversion piles 142 at intervals, the cross sections of the diversion piles 142 are in isosceles triangles, the tips of the diversion piles are arranged towards one side of the energy dissipation pool 140, the two waist surfaces of the diversion piles 142 are provided with the diversion channels 143, the widths of the diversion channels 143 are gradually increased from the tips to one side of the ground, and the depths of the diversion channels 143 are gradually increased. When sluicing, flood will flow through between two reposition of redundant personnel posts, when carrying out the energy dissipation, also can shunt the flood, reduce flood concentration and rush to the low reaches and lead to the possibility that low reaches riverbed earth runs off to the setting of subchannel 143 can make flood be the form of branching and discharge.

Referring to fig. 5 and 6, after draining, in order to discharge sludge in the energy dissipation pool 140, a connecting cylinder 144 is fixedly installed at one side of the energy dissipation pool 140, a horn-shaped suction hood 145 is integrally installed at the lower end of the connecting cylinder 144, a sludge discharge pipe 146 is inserted into the connecting cylinder 144, an insertion ring 147 is integrally installed on the inner wall of the lower end of the connecting cylinder 144, and an insertion ring groove 148 into which one end of the connecting cylinder 144 is inserted is formed in the insertion ring 147. One end of the sludge discharge pipe 146, which is far away from the bottom of the energy dissipation pool 140, is higher than the connecting cylinder 144, a mounting ring 149 is integrally arranged on the part of the sludge discharge pipe 146, which is higher than the connecting cylinder 144, the mounting ring 149 is fixed at the end part of the connecting cylinder 144 through a fixing bolt, and one end of the sludge discharge pipe 146 is connected with a sludge pump 150.

The implementation principle of the embodiment is as follows: after the water level rises, the flood will flow over the upper end of the shaft 100 and flow along the inner wall of the shaft 100, and fall in a spiral shape under the action of the flow deflectors 120, and the acting force between the flood and the inner wall of the shaft 100 can dissipate the energy of the flood when the flood falls. Meanwhile, the flood after falling is subjected to energy dissipation step by the energy dissipation rings 131 and then falls into the energy dissipation well 130, the water level rises and then flows into the energy dissipation pool 140 through the drainage channel, sludge carried by the flood is retained at the bottom of the energy dissipation pool 140, and the flood is discharged to the downstream through the diversion piles 142. Also can shunt the flood through reposition of redundant personnel stake 142 time, reduce flood and concentrate towards the low reaches and lead to the possibility that low reaches riverbed earth runs off to diversion channel 143's setting can make the flood be the branching form and discharge.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An energy dissipation structure of a spillway, comprising a shaft (100) and a water outlet channel (110) vertically connected to one end of the shaft (100), characterized in that: an energy dissipation well (130) is arranged at the lower end of the vertical shaft (100), the lower end of the energy dissipation well (130) is lower than the bottom end of the energy dissipation well (130) and lower than the water outlet channel (110), a plurality of energy dissipation rings (131) are arranged on the inner wall of the energy dissipation well (130) along the vertical direction, and the inner diameters of the energy dissipation rings (131) are gradually reduced from top to bottom.

2. An energy dissipating structure for spillways according to claim 1, further comprising: the shaft (100) upper end is loudspeaker form, be provided with a plurality of water conservancy diversion pieces (120) along circumference on shaft (100) upper end inner wall, a plurality of the one end of water conservancy diversion piece (120) sets up along the circular arc direction slope.

3. An energy dissipater structure for spillways according to claim 2, wherein: an energy dissipation pool (140) is arranged at one end, far away from the vertical shaft (100), of the water outlet channel (110), the middle of the energy dissipation pool (140) is arranged in a downward concave mode, and a water drainage channel (141) is arranged on one side, far away from the water outlet channel (110), of the energy dissipation pool (140).

4. An energy dissipater structure for spillways according to claim 3, wherein: the drainage channel (141) is provided with diversion piles (142) at intervals, the cross sections of the diversion piles (142) are isosceles triangles, the tips of the diversion piles face one side of the energy dissipation pool (140), diversion channels (143) are formed in the two waist surfaces of the diversion piles (142), and the widths of the diversion channels (143) are gradually increased from the tips to one side of the ground.

5. An energy dissipater structure for spillways according to claim 3, wherein: one side of the energy dissipation pool (140) is provided with a sludge discharge pipe (146), the side wall of the energy dissipation pool (140) is located, the lower end of the sludge discharge pipe (146) is provided with a trumpet-shaped suction cover (145), and one end of the sludge discharge pipe (146) is connected with a sludge pump (150).

6. An energy dissipater structure for spillways according to claim 5, wherein: the energy dissipation pool (140) is provided with a connecting cylinder (144) on the inner wall of the energy dissipation pool, the connecting cylinder (144) is sleeved on the sludge discharge pipe (146), the suction hood (145) is connected to the lower end of the connecting cylinder (144), and the sludge discharge pipe (146) is detachably connected to the connecting cylinder (144).

7. An energy dissipater structure for spillways according to claim 6, wherein: an inserting ring (147) is arranged on the inner wall of the lower end of the connecting cylinder (144), and an inserting ring groove (148) for embedding one end of the connecting cylinder (144) is formed in the inserting ring (147).

8. An energy dissipater structure for spillways according to claim 7, wherein: one end, far away from the bottom of the energy dissipation pool (140), of the mud discharging pipe (146) is higher than the connecting cylinder (144), a mounting ring (149) is arranged on the part, higher than the connecting cylinder (144), of the mud discharging pipe (146), and the mounting ring (149) is fixed at the end part of the connecting cylinder (144) through a fixing bolt.