Stepped desilting building

Abstract

The utility model discloses a stepped desilting building which comprises a hollow dam body with a U-shaped longitudinal section, a lifting device, a sand outlet and a plurality of desilting devices. The multiple desilting devices are arranged on the side wall, facing the reservoir, of the hollow dam body in the vertical direction, and the lengths, extending out of the side wall, of the multiple desilting devices are increased from top to bottom. The hoisting device is arranged at the dam crest and is connected with each desilting device; the sand outlet is formed in the wall, away from the reservoir, of the hollow dam body and communicates with the multiple sand discharging devices. According to the utility model, the lengths of the plurality of desilting devices extending out of the side wall are arranged in a stepped manner which is increased from top to bottom, and the adjacent desilting devices do not influence each other when the desilting devices are opened and closed by utilizing a hoisting device, so that the operation is more flexible when the desilting devices are opened according to the water level; sand flushing erosion to the datum plane can be reduced as much as possible according to the sand flushing requirement, water flow kinetic energy is fully utilized, and the water flow sand flushing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reservoir sedimentation control, and in particular relates to a stepped sand discharge building. Background Art

[0002] As the problem of water shortage becomes increasingly serious, reservoirs have gradually become the main source of water supply for most cities, but sedimentation is a thorny problem faced by almost every reservoir. The sedimentation inlet of conventional sedimentation buildings has a fixed elevation and is limited in its adaptability to changes in the elevation of the reservoir sedimentation surface. In the early stage of reservoir operation, when the sedimentation surface is lower than the sedimentation inlet, the sediment cannot be effectively discharged. In the later stage of operation, when the sedimentation surface is higher, it is easy to be blocked by sediment, which seriously limits the flexibility and reliability of sedimentation.

[0003] The existing flood discharge and sand discharge device is equipped with sand discharge inlets at different heights in layers, and the sand discharge inlet gate is opened nearby according to the area where muddy water exists.

[0004] However, most of the existing flood discharge and sand discharge devices are arranged side by side and in a staggered manner in the main river channel. When the river flow is insufficient, some sand discharge holes will fail, and it will be inconvenient to lift the gate. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a stepped sand discharge building.

[0006] The utility model discloses a stepped sand discharge building, comprising: a hollow dam body with a U-shaped longitudinal section, a lifting device, a sand outlet and a plurality of sand discharge devices;

[0007] A plurality of the sand discharge devices are arranged on the side wall of the hollow dam body facing the reservoir in the vertical direction, and the length of the plurality of sand discharge devices extending out of the side wall increases from top to bottom;

[0008] The lifting device is arranged on the dam top and is connected to each of the sand discharge devices;

[0009] The sand outlet is arranged on the wall of the hollow dam body away from the reservoir and is communicated with the multiple sand discharge devices.

[0010] Preferably, each of the sand discharge devices comprises a sand inlet channel and a gate;

[0011] A plurality of the sand inlet channels are arranged on the side wall of the hollow dam body facing the reservoir in the vertical direction, and the lengths of the plurality of sand inlet channels extending out of the side wall increase from top to bottom;

[0012] Each of the gates is arranged at the sand inlet of the corresponding sand inlet channel;

[0013] The lifting device is connected with each of the gates.

[0014] Preferably, each of the sand removal devices further comprises a filter screen;

[0015] The filter screen is arranged between the corresponding gate and the sand inlet.

[0016] Preferably, the sizes of the sand inlets of the multiple sand inlet channels increase sequentially from top to bottom.

[0017] Preferably, the stepped sand removal structure further includes an energy dissipation pool;

[0018] The energy dissipation pool is arranged inside the hollow dam body and is communicated with the multiple sand discharge devices and the sand outlet.

[0019] Optionally, the lifting device is a winch or a gantry hoist.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The utility model sets the length of the multiple sand discharge devices extending out of the side wall to increase in a stepped manner from top to bottom, and opens them sequentially from top to bottom during sand discharge, thereby ensuring the reliable opening of the bottom hole sand discharge and flood discharge gate. Therefore, the utility model can adapt to the substantial increase in the siltation elevation of a reservoir with a lot of sediment, and can improve the flexibility of sand discharge and the reliability of flood discharge;

[0022] (2) The utility model adopts a structure in which multiple sand discharge devices are used to discharge sand in layers, which can effectively discharge flood water and sand in a targeted manner according to the water level, and is more efficient;

[0023] (3) The utility model sets the sizes of multiple sand inlets according to the water level, sand content and the distribution pattern of sand along the vertical line, which is "thin at the top and thick at the bottom, fine at the top and coarse at the bottom", thereby improving the sand discharge efficiency, preventing sand congestion and saving costs;

[0024] (4) The utility model can also set a filter screen at the sand inlet of the sand discharge device to filter out larger impurities in the sludge to prevent the sand discharge device from being blocked, thereby reducing the cost of repair and maintenance;

[0025] (5) The utility model sets up an energy dissipation pool in the dam body, which can reduce the impact of water flow on the sand outlet and extend the service life of the utility model;

[0026] (6) The utility model utilizes a gate-type gate hoist to open and close the gate of the sand discharge device. The gate-type gate hoist can flexibly adjust the connection position with each sand discharge device, so that a set of equipment can be used to open and close multiple devices, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the front view of the utility model;

[0028] Figure 2 It is a top view of the utility model;

[0029] Figure 3 It is a cross-sectional view of the utility model;

[0030] In the figure, 1 is the surface sand discharge device; 2 is the middle layer sand discharge device; 3 is the bottom layer sand discharge device; 4 is the sand outlet; 5 is the gate slot; 6 is the energy dissipation pool; 7 is the gantry hoist; and 8 is the gantry machine track. DETAILED DESCRIPTION

[0031] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0032] like Figure 1 As shown, the utility model discloses a stepped sand discharge building, comprising: a hollow dam body with a U-shaped longitudinal section, a lifting device, a sand outlet 4 and a plurality of sand discharge devices;

[0033] A plurality of sand discharge devices are arranged on the side wall of the hollow dam body facing the reservoir in the vertical direction, and the length of the plurality of sand discharge devices extending out of the side wall increases from top to bottom;

[0034] In this embodiment, the hollow dam body is arranged downstream of the reservoir. The shape of the hollow dam body is a rectangular parallelepiped. The side wall of the hollow dam body facing the reservoir is sequentially provided with a surface sand discharge device 1, a middle sand discharge device 2 and a bottom sand discharge device 3. A sand outlet 4 is arranged on the side away from the reservoir (i.e. opposite to the side wall where the sand discharge device is located), and the height of the sand outlet 4 is lower than the height of the bottom sand discharge device.

[0035] The utility model sets the length of multiple sand discharge devices extending out of the side wall in a stepped manner which increases from top to bottom, and opens them sequentially from top to bottom during sand discharge, thereby ensuring the reliable opening of the bottom hole sand discharge and flood discharge gate. Therefore, the utility model can adapt to the substantial increase in the siltation elevation of a reservoir with a lot of sediment, and can improve the flexibility of sand discharge and the reliability of flood discharge.

[0036] Preferably, each sand discharge device includes a sand inlet channel and a gate;

[0037] A plurality of sand inlet channels are arranged on the side wall of the hollow dam body facing the reservoir in a vertical direction, and the lengths of the plurality of sand inlet channels extending out of the side wall increase from top to bottom;

[0038] Each gate is arranged at the sand inlet of the corresponding sand inlet channel;

[0039] A lifting device is connected to each gate.

[0040] The utility model adopts a structure in which multiple sand discharge devices are used to discharge sand in layers, which can effectively carry out targeted flood discharge and sand discharge according to the water level, and has higher efficiency.

[0041] When the utility model is used to lift the gate, the corresponding gate can be flexibly opened according to the water level elevation and the water flow, the gates will not hinder each other when opened, and the connection and disassembly of the lifting equipment and the corresponding gate are also more convenient, so the use of the utility model is simple and quick to operate.

[0042] Preferably, each sand removal device may be further provided with a filter screen;

[0043] The filter screen is arranged between the corresponding gate and the sand inlet.

[0044] The utility model provides a filter screen at the sand inlet of the sand discharge device, which can filter larger impurities in the sludge to prevent the sand discharge device from being blocked, thereby reducing the repair and maintenance costs.

[0045] Preferably, the sizes of the sand inlets of the multiple sand inlet channels increase sequentially from top to bottom.

[0046] The lifting device is arranged on the dam top and connected with each sand discharge device;

[0047] The sand outlet 4 is arranged on the wall of the hollow dam body away from the reservoir and is connected with a plurality of sand discharge devices.

[0048] The utility model sets the sizes of multiple sand inlets according to the water level, sand content and the distribution pattern of sediment along the vertical line of "sparse on top and dense on bottom, fine on top and coarse on bottom", which can improve the sand discharge efficiency, prevent sediment congestion and save costs.

[0049] Preferably, Figure 3 As shown, the stepped sand discharge structure also includes a stilling pool 6;

[0050] The energy dissipation pool 6 is arranged inside the hollow dam body and communicates with a plurality of sand discharge devices and the sand outlet 4 .

[0051] The utility model arranges an energy dissipation pool in the dam body, which can reduce the impact force of water flow on the sand outlet and prolong the service life of the utility model.

[0052] Optionally, the lifting device is a winch or a gantry hoist 7.

[0053] In one embodiment, the number of winches is set to be the same as the number of gates; multiple winches are arranged in parallel on the dam top along the direction of water flow, each winch is connected to a corresponding gate, and multiple gates are opened and closed individually or simultaneously according to the water level and water volume.

[0054] like Figure 2 As shown, the trolley, hoisting rope and gantry machine track 8 of the gantry hoist 7 are arranged on the top of the hollow dam body, and the bottom end of the hoisting rope is provided with a hook and an automatic grab beam, and the automatic grab beam is detachably connected to the hook. The trolley moves horizontally along the track, adjusts the relative position of the hoisting rope and the gate to be lifted, and then lowers the hoisting rope to pull the gate to slide along the gate groove 5, thereby realizing the lifting and lowering of the gate.

[0055] The utility model utilizes a gate-type hoist to open and close the gate of the sand discharge device. The gate-type hoist can flexibly adjust the connection position with each sand discharge device, so that a set of equipment can be used to open and close multiple devices, thereby saving costs.

[0056] Compared with the prior art, the utility model has the following beneficial effects:

[0057] (1) The utility model sets the length of the multiple sand discharge devices extending out of the side wall to increase in a stepped manner from top to bottom, and opens them sequentially from top to bottom during sand discharge, thereby ensuring the reliable opening of the bottom hole sand discharge and flood discharge gate. Therefore, the utility model can adapt to the substantial increase in the siltation elevation of a reservoir with a lot of sediment, and can improve the flexibility of sand discharge and the reliability of flood discharge;

[0058] (2) The utility model adopts a structure in which multiple sand discharge devices are used to discharge sand in layers, which can effectively discharge flood water and sand in a targeted manner according to the water level, and is more efficient;

[0059] (3) The utility model sets the sizes of multiple sand inlets according to the water level, sand content and the distribution pattern of sand along the vertical line, which is "thin at the top and thick at the bottom, fine at the top and coarse at the bottom", thereby improving the sand discharge efficiency, preventing sand congestion and saving costs;

[0060] (4) The utility model can also set a filter screen at the sand inlet of the sand discharge device to filter out larger impurities in the sludge to prevent the sand discharge device from being blocked;

[0061] (5) The utility model sets up an energy dissipation pool in the dam body, which can reduce the impact of water flow on the sand outlet and extend the service life of the utility model;

[0062] (6) The utility model utilizes a gate-type gate hoist to open and close the gate of the sand discharge device. The gate-type gate hoist can flexibly adjust the connection position with each sand discharge device, so that a set of equipment can be used to open and close multiple devices, saving costs.

[0063] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A stepped sand removal building, characterized in that: include: A hollow dam body with a U-shaped longitudinal section, a lifting device, a sand outlet and multiple sand discharge devices; A plurality of the sand discharge devices are arranged on the side wall of the hollow dam body facing the reservoir in the vertical direction, and the length of the plurality of sand discharge devices extending out of the side wall increases from top to bottom; The lifting device is arranged on the dam top and is connected to each of the sand discharge devices; The sand outlet is arranged on the wall of the hollow dam body away from the reservoir and is communicated with the multiple sand discharge devices.

2. The stepped sand removal building according to claim 1, characterized in that: Each of the sand discharge devices comprises a sand inlet channel and a gate; A plurality of the sand inlet channels are arranged on the side wall of the hollow dam body facing the reservoir in the vertical direction, and the lengths of the plurality of sand inlet channels extending out of the side wall increase from top to bottom; Each of the gates is arranged at the sand inlet of the corresponding sand inlet channel; The lifting device is connected with each of the gates.

3. The stepped sand removal building according to claim 2, characterized in that: Each of the sand removal devices also includes a filter screen; The filter screen is arranged between the corresponding gate and the sand inlet.

4. The stepped sand removal building according to any one of claims 2 to 3, characterized in that: The sizes of the sand inlets of the plurality of sand inlet channels increase sequentially from top to bottom.

5. The stepped sand removal building according to claim 1, characterized in that: It also includes stilling ponds; The energy dissipation pool is arranged inside the hollow dam body and is communicated with the multiple sand discharge devices and the sand outlet.

6. The stepped sand removal building according to claim 1, characterized in that: The lifting device is a winch or a gantry hoist.

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