阅读说明：本技术 采用立式双向旋转闸门的束水冲砂方法 (Water-bundling sand washing method adopting vertical bidirectional rotary gate ) 是由 谢遵党 杨顺群 周伟 岳卫 刘许超 姚雷 刘闽豫 谢腾飞 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种采用立式双向旋转闸门的束水冲砂方法,所述立式双向旋转闸门包括依次设置有进口段、闸室段和冲砂段的冲砂流道,位于闸室段内的闸门单元,其包括转铰机构、支撑架和挡水面板,所述束水冲砂方法包括：当水流量较大时,将挡水面板转移至闸室段的挡墙内,使水流同时经过全部冲砂槽；当水流量较小时,调整两扇挡水面板之间过流通道的开度和位置,使水流对冲砂槽进行分次冲砂,每次冲砂对应于一个或多个冲砂槽。本发明能够根据过流量调节闸门的位置和开合角度,从而达到减小过流断面、提高水流速度、扰动河床泥沙的目的,使水流按照预定路径将泥沙冲至下游,实现束流冲砂、恢复库容的目的。(The invention discloses a water-binding sand washing method adopting a vertical bidirectional rotary gate, wherein the vertical bidirectional rotary gate comprises a sand washing runner which is sequentially provided with an inlet section, a gate chamber section and a sand washing section, and a gate unit which is positioned in the gate chamber section and comprises a rotary hinge mechanism, a support frame and a water retaining panel, and the water-binding sand washing method comprises the following steps: when the water flow is large, the water retaining panel is transferred into the retaining wall of the lock chamber section, so that the water flow passes through all the sand washing grooves simultaneously; when the water flow is small, the opening and the position of the overflowing channel between the two water retaining panels are adjusted, so that the water flow carries out sand washing on the sand washing grooves in a grading manner, and each sand washing corresponds to one or more sand washing grooves. The invention can adjust the position and the opening and closing angle of the gate according to the overflow, thereby achieving the purposes of reducing the overflow section, improving the water flow speed and disturbing the riverbed silt, leading the water flow to flush the silt to the downstream according to a preset path, and realizing the purposes of beam flow sand flushing and reservoir capacity recovery.)

1. A method for washing sand by water beams by adopting a vertical bidirectional rotary gate is characterized in that,

the vertical bidirectional rotary gate comprises:

the sand washing flow channel is provided with a bottom surface and retaining walls arranged on two sides of the bottom surface, and comprises an inlet section, a lock chamber section and a sand washing section which are sequentially arranged, the retaining walls of the lock chamber section are of concentric arc structures which are symmetrically arranged, and a plurality of sand washing grooves are arranged in the sand washing section;

a gate unit located in the gate chamber section, comprising

The rotary hinge mechanism is arranged at the center of the bottom surface of the lock chamber section and is provided with a rotary shaft vertical to the bottom surface of the sand washing runner;

two support frames are arranged, and one ends of the support frames are connected with the rotating shaft;

the two water retaining panels are respectively connected with the other ends of the two support frames, the water retaining panels are arc-shaped panels arranged in an equal diameter mode, and the distance between the two water retaining panels and the retaining wall of the lock chamber section is equal;

the driving unit is connected with the gate unit and used for changing the position of the water retaining panel;

the sand washing method by water beam comprises the following steps:

when the water flow is large, the water retaining panel is transferred into the retaining wall of the lock chamber section, so that the water flow passes through all the sand washing grooves simultaneously;

when the water flow is small, the opening and the position of the overflowing channel between the two water retaining panels are adjusted, so that the water flow carries out sand washing on the sand washing grooves in a grading manner, and each sand washing corresponds to one or more sand washing grooves.

2. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 1, wherein: the bottom of the support frame is provided with a supporting wheel, and the bottom surface of the sand washing runner below the supporting wheel is correspondingly provided with an embedded track.

3. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 2, wherein: the supporting wheel and the embedded track are arranged close to one side of the water retaining panel, an L-shaped water seal is arranged at the bottom of the water retaining panel, and the other end of the L-shaped water seal is attached to the embedded track.

4. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 1, wherein: the support frame is further provided with a floating box, and the floating box is arranged on one side close to the water retaining panel.

5. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 1, wherein: the driving unit is a hydraulic hoist arranged on the outer side of the retaining wall, and a piston rod of the hydraulic hoist extends into the lock chamber section and is connected with the supporting frame.

6. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 1, wherein: the driving mechanism comprises a hydraulic motor arranged on the outer side of the retaining wall, and a gear arranged on the hydraulic motor is meshed with a rack arranged on the outer side of the water retaining panel.

7. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 1, wherein: the sand washing groove is formed by separating guide walls arranged in the sand washing section.

8. The sand washing method by using the bundle water of the vertical type bidirectional rotary gate as claimed in claim 1, wherein: the joint of the inlet section and the lock chamber section is of a necking structure, and the joint of the sand washing section and the lock chamber section is of a flaring dovetail structure.

Technical Field

The invention relates to the technical field of hydraulic engineering, in particular to a method for washing sand by using water beams of a vertical bidirectional rotary gate.

Background

Many rivers in China, especially some rivers in northwest and north China, have very high sand content, and when a reservoir or a barrage is built, the water flow speed is further reduced, so that suspended substances such as silt and the like are deposited on a river bed to form siltation, and a series of adverse effects are generated on the reservoir capacity, the ecological environment, the shipping, the reservoir safety and the like. At present, the reservoir capacity is emptied in the flood season, the water level of the reservoir is reduced, at the moment, water flow scours the main tank, the reservoir sedimentation is relieved to a certain extent, and the effect is not obvious. A grit chamber is often required to be arranged at the inlets of water diversion projects and hydropower stations, and the grit chamber needs to be washed out periodically. For a larger-scale desilting basin, a plurality of plane gates or radial gates are often arranged, and the investment is high.

Disclosure of Invention

In order to solve the problems, the invention provides a method for washing sand by using water beams of a vertical bidirectional rotary gate, which can specifically adopt the following technical scheme:

the invention relates to a method for washing sand by water beams by adopting a vertical bidirectional rotary gate,

the vertical bidirectional rotary gate comprises:

the sand washing flow channel is provided with a bottom surface and retaining walls arranged on two sides of the bottom surface, and comprises an inlet section, a lock chamber section and a sand washing section which are sequentially arranged, the retaining walls of the lock chamber section are of concentric arc structures which are symmetrically arranged, and a plurality of sand washing grooves are arranged in the sand washing section;

a gate unit located in the gate chamber section, comprising

The rotary hinge mechanism is arranged at the center of the bottom surface of the lock chamber section and is provided with a rotary shaft vertical to the bottom surface of the sand washing runner;

two support frames are arranged, and one ends of the support frames are connected with the rotating shaft;

the two water retaining panels are respectively connected with the other ends of the two support frames, the water retaining panels are arc-shaped panels arranged in an equal diameter mode, and the distance between the two water retaining panels and the retaining wall of the lock chamber section is equal;

the driving unit is connected with the gate unit and used for changing the position of the water retaining panel;

the sand washing method by water beam comprises the following steps:

when the water flow is large, the water retaining panel is transferred into the retaining wall of the lock chamber section, so that the water flow passes through all the sand washing grooves simultaneously;

when the water flow is small, the opening and the position of the overflowing channel between the two water retaining panels are adjusted, so that the water flow carries out sand washing on the sand washing grooves in a grading manner, and each sand washing corresponds to one or more sand washing grooves.

The bottom of the support frame is provided with a supporting wheel, and the bottom surface of the sand washing runner below the supporting wheel is correspondingly provided with an embedded track.

The supporting wheel and the embedded track are arranged close to one side of the water retaining panel, an L-shaped water seal is arranged at the bottom of the water retaining panel, and the other end of the L-shaped water seal is attached to the embedded track.

The support frame is further provided with a floating box, and the floating box is arranged on one side close to the water retaining panel.

The driving unit is a hydraulic hoist arranged on the outer side of the retaining wall, and a piston rod of the hydraulic hoist extends into the lock chamber section and is connected with the supporting frame.

The driving mechanism comprises a hydraulic motor arranged on the outer side of the retaining wall, and a gear arranged on the hydraulic motor is meshed with a rack arranged on the outer side of the water retaining panel.

The sand washing groove is formed by separating guide walls arranged in the sand washing section.

The joint of the inlet section and the lock chamber section is of a necking structure, and the joint of the sand washing section and the lock chamber section is of a flaring dovetail structure.

The invention provides a method for washing sand by using beam water of a vertical bidirectional rotary gate, which is characterized in that the vertical bidirectional rotary gate is arranged, a runner at the downstream of the gate is divided into a plurality of sand washing grooves, and the position and the opening and closing angle of the gate are adjusted according to the overflow, so that the aims of reducing the overflow section, improving the water flow speed and disturbing the riverbed sediment are fulfilled, the sediment is washed to the downstream by the water flow according to a preset path, the aims of beam sand washing and reservoir capacity recovery are fulfilled, and the adverse effects of sediment deposition on the reservoir capacity, the ecological environment, the shipping, the reservoir safety and the like of a reservoir are reduced.

Drawings

FIG. 1 is a schematic view showing the structure of a vertical type two-way rotary lock gate according to the present invention.

Fig. 2 is a schematic view of the direction a-a of fig. 1.

Fig. 3 is an enlarged view of a portion B of fig. 2.

Fig. 4 is a schematic view from a-a to fig. 1.

Fig. 5 is an enlarged view of the portion C of fig. 4.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and give detailed implementation manners and specific working procedures, but the scope of the present invention is not limited to the following embodiments.

The method for washing sand by using the water beam of the vertical bidirectional rotary gate uses the vertical bidirectional rotary gate as shown in figures 1-5, and generally comprises a sand washing runner 1, a gate unit and a driving mechanism.

The sand washing flow passage 1 comprises a bottom surface and two side retaining walls of a concrete structure, and is sequentially divided into an inlet section, a lock chamber section and a sand washing section. Wherein, the barricade of lock chamber section is the concentric arc structure of symmetry setting, receives the restriction of gate scale, and its diameter should be as little as possible under the prerequisite that satisfies the sand washing requirement, consequently, the entrance department is mostly the throat structure with lock chamber section junction, and the sand washing section is the forked tail structure of flaring shape with lock chamber section junction, and has built guide wall 101 usually, divide into a plurality of sand washing grooves 102 with the sand washing section for guide rivers flow in the sand washing groove 102 that corresponds.

The gate unit is located in the chamber section and includes a hinge mechanism 210, a support bracket 220, and a water blocking panel 230. The pivot hinge mechanism 210 is usually one, and only one support frame 220 and one water retaining panel 230 may be mounted thereon, or two sets of support frames 220 and two sets of water retaining panels 230 may be mounted thereon as described in this embodiment. Specifically, the hinge mechanism 210 mainly includes a hinge embedded part 211, a rotating shaft 212 and a connecting part 213, the hinge embedded part 211 is located at the center of the bottom surface of the lock chamber section, the rotating shaft 212 mounted thereon is perpendicular to the bottom surface of the sand washing runner, two connecting parts 213 are mounted on the rotating shaft 212, and each connecting part 213 is connected with a supporting frame 220. The support frames 220 are all steel space grid structures, the length of each support frame is smaller than the radius of the lock chamber section, and the water retaining panel 230 is installed at the other end of each support frame 220. In order to reduce the load of the support frame 220 and enable the support frame 220 to rotate relatively easily, 4-10 supporting wheels 221 are installed at the bottom of the support frame 220, the supporting wheels 221 are arranged close to one side of the water-retaining panel 230, and pre-buried rails 222 are correspondingly installed on the bottom surface of the sand washing flow channel below the supporting wheels 221. Further, a hollow buoyancy tank 223 is mounted on the support frame 220, and the buoyancy tank 223 is also disposed near one side of the water blocking panel 230. The two water retaining panels 230 are arc-shaped panels with equal diameters, and are generally the same in size and shape, and are equidistant from the retaining wall of the chamber section (preferably, the spacing distance is 100 mm). In addition, the bottom of the water retaining panel 230 is provided with an L-shaped water seal 231 made of rubber, and the other end of the L-shaped water seal 231 is attached to the embedded rail 222 to play a role in retaining water.

The driving unit is connected with the gate unit and used for changing the position of the water retaining panel 230 so as to change the position and the opening of the overflowing channel between the gate chamber section and the sand washing section, improve the water flow rate in a mode of narrowing the overflowing section, disturb the sediment deposited at the lower part of the sand washing tank 102 and achieve the purpose of sand washing.

As shown in fig. 1-3, the driving unit may be a hydraulic hoist 301 installed on the outer side of the retaining wall (or on the top of the retaining wall), the hydraulic cylinder of the hydraulic hoist 301 is connected to the frame through a cross hinge, and the piston rod extends into the lock chamber section and is connected to the top of the supporting frame 220. When the hydraulic hoist 301 is operated, the water guard plate 230 may rotate clockwise or counterclockwise about the rotating shaft 212.

As shown in fig. 4 and 5, the driving mechanism may be a hydraulic motor 302 installed on the top of the retaining wall (or on the top of the retaining wall), and the hydraulic motor 302 is provided with a gear 303 which is engaged with a rack 304 installed on the outer side of the water blocking panel 230. When the hydraulic motor 302 is operated, the water guard panel 230 may rotate clockwise or counterclockwise about the rotation shaft 212.

When the vertical bidirectional rotary gate is used for water-bundling and sand washing, the position and the opening degree between the two water retaining panels 230 are usually adjusted according to the water flow, that is, the position and the size of the flow passage are adjusted. Specifically, when the water flow is large, the two water retaining panels 230 are respectively transferred into the retaining walls of the lock chamber sections at the two sides, so that the gate is in a fully open state, and at the moment, the water flow passes through all the sand washing grooves 102 simultaneously; when the water flow is small, the flow passage is required to move in sequence in the clockwise or anticlockwise direction to sand the sand washing grooves 102 in a grading manner, and the size of the flow passage is required to be adjusted to be one, two or three … widths of the sand washing grooves 102 in each sand washing process according to the specific water flow so as to effectively and efficiently finish the sand washing operation.

It should be noted that the main function of the vertical bidirectional rotary gate is water flow guiding, and water retaining is not needed, so that complete sealing is not needed; secondly, when the water flow is large, even if the gate is fully opened, the overflowing condition may not be met, at this time, the sand washing runner retaining wall and the top of the gate are allowed to overflow, but the pump station part of the hydraulic hoist 301 needs to be arranged at a high position to prevent the hydraulic hoist from being submerged by water.

It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.