CN217839883U

CN217839883U - Silt discharging device for channel convex bank

Info

Publication number: CN217839883U
Application number: CN202221778126.8U
Authority: CN
Inventors: 南军虎; 李伟; 汪超群; 马康宁; 陶然; 代江龙; 刘一安; 陈垚
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-18
Anticipated expiration: 2032-07-11

Abstract

The utility model discloses a silt removing device for a channel convex bank, which comprises a drop chamber with a cavity, wherein the top of the drop chamber is provided with an opening, the drop chamber is arranged at the bottom of the channel convex bank and is communicated with a channel through the opening, and the opening direction of the drop chamber is consistent with the direction of water flow in the channel; the bottom of the drop chamber is communicated with a rotational flow pipe, the tail end of the rotational flow pipe is communicated with a sand discharge bent pipe, and the sand discharge bent pipe and the rotational flow pipe are positioned on the same horizontal plane and are vertical; a flow guide ridge is arranged above the drop chamber and fixed on the concave bank of the channel. The drop chamber is arranged in the region where the channel convex bank silt is easy to accumulate, so that the pushed sediment to be accumulated in the bending section and the sediment transported to the convex bank by the transverse circulation flow enter the cyclone tube along with a small amount of water flow under the action of gravity to form a three-dimensional hoisting water flow with strong sand-holding capacity, and the sediment is discharged from the sand discharge elbow.

Description

Silt discharging device for channel convex bank

Technical Field

The utility model belongs to the technical field of silt reduces discharging in the crooked channel, a arrange silt device for channel revetment is related to.

Background

Along with the increase of the water demand of industry and agriculture and the increase of the number of long-distance water diversion projects, the proportion of the curved channels in the water diversion projects gradually rises. When high sandy water flows through the bend, because the directional concave bank of bending section top layer rivers of the effect of centrifugal force, the directional convex bank of bottom rivers forms the transverse circulation in the section, and after the stack with vertical rivers flow, rivers are the heliciform and advance, have aggravated the migration of silt on the cross section, and because of receiving the action of gravity simultaneously, silt deposits easily at the convex bank, forms the edge shoal problem that the shallow stream of water is slow. The channel convex bank is continuously silted, the bending degree of the channel is increased, the stability and the safety of the channel embankment and the side slope are endangered, and the normal operation of a channel, living things inhabitation and a water diversion project can be influenced. Therefore, how to effectively solve the sediment accumulation of the channel convex bank, protect the biological diversity of the diversion channel, ensure the normal navigation and the normal operation of the diversion project, the sediment discharge of the convex bank naturally becomes one of the key technologies which are mainly solved, and the method is also a hot subject in the sediment research field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a arrange silt device for channel convex bank has solved the problem of the channel convex bank silt siltation that exists among the prior art to realize arranging the silt naturally.

The utility model adopts the technical proposal that the silt discharging device for the channel convex bank comprises a drop chamber with a cavity, wherein the top of the drop chamber is provided with an opening, the drop chamber is arranged at the bottom of the channel convex bank and is communicated with the channel through the opening, and the opening direction of the drop chamber is consistent with the direction of water flow in the channel; the bottom of the drop chamber is communicated with a rotational flow pipe, the tail end of the rotational flow pipe is communicated with a sand discharge bent pipe, and the sand discharge bent pipe and the rotational flow pipe are positioned on the same horizontal plane and are vertical; a flow guide ridge is arranged above the drop chamber and fixed on the concave bank of the channel.

The utility model discloses a characteristics still lie in:

the cross section of the fall chamber is arc-shaped and is in a gentle slope shape, and the section of an opening of the fall chamber is gradually reduced.

The height of the flow guide ridge is less than 1/2 of the designed water level of the channel.

The water conservancy diversion bank is the spatial structure of rectangle for the cross-section.

The diversion ridge is fixed in a barb shape on the concave bank of the channel.

The water conservancy diversion bank is provided with a plurality ofly, and is even and parallel fixed.

The utility model discloses a arrange silt device sets up the drop room through the easy siltation region of channel convex bank silt, let the bending section be about to the migration matter silt of siltation and because the silt that the transverse circulation migration moved to the convex bank gets into the cyclone tube along with a small amount of rivers under the action of gravity, form the three-dimensional hoist rivers that hold the sand ability stronger, discharge silt from arranging the husky return bend, the device has solved the siltation problem of channel convex bank silt, the silt of arranging husky return bend discharge can regard as building material reuse through simple processing, rivers can flow back to subordinate's channel, a device that water resource high efficiency utilized. The method can be used for treating silt deposited on the convex bank of the diversion channel, primary treatment of impurities in a sewage plant and friendly mining of silt in a channel with high silt content, and has wide application prospect.

Drawings

FIG. 1 is a schematic front view of the silt removing apparatus for channel banks according to the present invention;

FIG. 2 is a schematic top view of the silt removing apparatus for channel banks according to the present invention;

fig. 3 is a left side view of the silt discharging apparatus for channel bank of the present invention.

In the figure, 1 is a channel, 2 is a convex bank, 3 is a concave bank, 4 is a drop chamber, 5 is a rotational flow pipe, 6 is a sand discharge bent pipe, and 7 is a flow guide ridge.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the utility model discloses a arrange silt device for protruding bank of channel, including channel 1, water conservancy diversion bank 7, drop room 4, cyclone tube 5, arrange husky return bend 6.

Specifically, the drop chamber 4 has a cavity structure, an opening is arranged at the top of the drop chamber 4, the drop chamber 4 is arranged at the bottom of the convex bank 2 of the channel 1 and is communicated with the channel 1 through the opening, and the opening direction of the drop chamber 4 is consistent with the direction of water flow in the channel 1. The drop chamber 4 is arranged in an area where silt on a channel convex bank is easy to deposit, the opening of the drop chamber 4 is parallel to the arc tangent of the convex bank 2, the lower part of the drop chamber 4 is butted with a cyclone tube 5 with a small-size inlet, and the outlet section of the cyclone tube 5 is connected with a sand discharge elbow 6. When water flows through the bent section of the channel, silt at the bottom of the channel 1 is transported to the convex bank 2 and enters the drop chamber 4 due to the transverse circulation generated by the combined action of centrifugal force and gravity. The arc-shaped structure of the drop chamber 4 fully converts the potential energy of the water flow into kinetic energy, and increases the three-dimensional rotation speed of the sand-laden water flow in the cyclone tube 5; the left wall gentle slope structure of the drop chamber 4 can increase the pressure of a water flow inlet and improve the axial speed in the cyclone tube 5.

The flow guide ridge 7 is of a three-dimensional structure with a rectangular cross section, and the flow guide ridge 7 is fixed on the concave bank 3 of the channel 1 in a barbed shape. The water conservancy diversion bank 7 is provided with a plurality ofly, and is even and parallel fixed, and the height of water conservancy diversion bank 7 is less than 1/2 channel 1 design water level, and the main function is the high sandy rivers direction in change channel 1 bottom, slows down rivers and to the washing away of revetment 3, can drive the middle silt that deposits in channel 1 bottom simultaneously and get into drop room 4, improves the desilting effect.

The device has utilized the characteristics that the velocity of flow of 2 rivers on the protruding bank of channel 1 is little, silt is easy to siltation, simultaneously water conservancy diversion bank 7 can guide the promotion matter silt that will deposit in the rivers and get into drop room 4, and the high concentration contains husky rivers and fall under the action of gravity and get into vortex tube 5, utilizes the difference in height between channel 1 bottom and the curved pipe 6 of arranging the husky motion that the sand-carrying ability is strong in vortex tube 5 formation, discharges silt from the curved pipe 6 of arranging the husky under the turbulent motion of rivers, and then reaches the desilting effect.

In the silt discharging device of the channel convex bank, the sandy water flow enters the drop chamber 4 under the combined action of centrifugal force and gravity, so the silt discharging device is suitable for the curved channel with any radian; the structure is simple, no machine or rotating part is used for realizing sludge discharge, and the problems of frequent replacement of vulnerable components and maintenance are solved; the arrangement of the drop chamber 4 solves the sediment accumulation of the convex bank 2 of the channel 1 and slows down the advancing speed of the beaching of the convex bank 2; the potential energy of the water flow is converted into kinetic energy by utilizing the height difference between the bottom of the channel 1 and the sand discharge elbow 6, so that the sand-carrying capacity of the water flow in the cyclone tube 5 is improved; the setting of water conservancy diversion bank 7 guides the curve silt-laden rivers to flow to the convex bank 2, has slowed down rivers and has washed away the silt effect to 3 on the bank of recess simultaneously. The sand discharge elbow pipe 6 is independently arranged, so that the maintenance cost is low, the silt discharge efficiency is high, the treatment time is short, the sustainability is realized, and the sand-water separation device is environment-friendly and economic.

The utility model is characterized in that:

(1) The utility model discloses design drop room 4 at the convex bank 2 of channel 1, rivers are when the bend of flowing through, under transverse circulation's effect, silt moves to the convex bank in the section and gets into drop room 4, have solved the beaching problem of silt at the formation of convex bank siltation.

(2) The arrangement of the fall chamber 4 increases the fall between the channel 1 and the sand discharge elbow 6, fully converts the potential energy of the water flow into kinetic energy, and fully ensures the formation of strong sand-carrying capacity of the water flow in the cyclone tube 5, thereby discharging the silt falling into the cyclone tube 5 from the sand discharge elbow 6.

(3) The left side of the drop chamber 4 is arranged in a gentle slope shape, so that the inlet of the cyclone tube 5 is reduced, the pressure of water flow entering the cyclone tube 5 is increased, and the axial speed of the water flow in the cyclone tube 5 and the sand-carrying capacity of the water flow in the sand discharge elbow 6 are improved.

(4) The arrangement of the flow guide ridges 7 changes the flowing direction of the sandy water flow at the bottom layer of the channel 1, and can drive sediment which is easy to deposit in the middle of the channel to enter the drop chamber 4, so that the silt discharging effect is enhanced.

(5) The utility model discloses a device is that high sandy water flows migrate to the convex bank 2 under the effect of transverse circulation, gets into cyclone tube 5 under self action of gravity, consequently is applicable to the crooked channel of arbitrary radian.

Claims

1. The silt removing device for the channel convex bank is characterized by comprising a drop chamber (4) with a cavity, wherein an opening is formed in the top of the drop chamber (4), the drop chamber (4) is arranged at the bottom of the convex bank (2) of the channel (1) and is communicated with the channel (1) through the opening, and the opening direction of the drop chamber (4) is consistent with the direction of water flow in the channel (1); the bottom of the drop chamber (4) is communicated with a cyclone tube (5), the tail end of the cyclone tube (5) is communicated with a sand discharge elbow (6), and the sand discharge elbow (6) and the cyclone tube (5) are positioned on the same horizontal plane and are vertical; a flow guide ridge (7) is arranged above the drop chamber (4), and the flow guide ridge (7) is fixed on a concave bank of the channel (1).

2. The dredging device for the channel convex bank according to claim 1, wherein the cross section of the drop height chamber (4) is arc-shaped and is in a gentle slope shape, and the section of the opening of the drop height chamber (4) is gradually reduced.

3. A silt removing apparatus for a channel bank according to claim 1, wherein the height of the draft sill (7) is less than 1/2 of the design water level of the channel (1).

4. A silt removing apparatus for a channel land according to claim 1, wherein said deflector ridge (7) is a three-dimensional structure with a rectangular cross section.

5. A silt removing apparatus for a raised bank of a channel as claimed in claim 1, wherein said deflector ridge (7) is fixed in a barbed manner on the recessed bank (3) of the channel (1).

6. The dredging device for the channel convex bank according to claim 1, wherein the flow guide ridge (7) is provided in plurality, and the flow guide ridge (7) is uniformly and parallelly fixed.