Bank-near layered water taking device for sediment-laden reservoir

Abstract

The utility model discloses a shore type layered water taking device for a sediment-carrying reservoir, which comprises a plurality of lock chambers with different elevations, the lock chambers are arranged in a row from bottom to top in a laminated manner or in parallel, the front side of each lock chamber is sequentially provided with a trash rack and a water taking door along the downstream direction, and the rear side of each lock chamber is provided with a valve chamber; the valve chambers are arranged in a laminated mode from bottom to top, the number of the valve chambers is equal to that of the lock chambers, a water inlet pipe led out of the corresponding lock chamber is arranged in each valve chamber, an adjusting valve is arranged on each water inlet pipe, all the water inlet pipes are connected with a main pipe vertically penetrating through the valve chambers, and the main pipe is connected with water diversion equipment. The water taking device is simple in structure, convenient to construct, easy to maintain, high in water taking flexibility, high in water taking guarantee rate, capable of effectively guaranteeing the discharged water temperature and effectively improving the water taking quality, and very suitable for water taking of a sediment-carrying reservoir.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy facilities technical field especially is related to a layered water taking device for the bank of the reservoir of many silt. BACKGROUND

[0002] Due to poor mobility of the bottom water flow of the reservoir, when there are more underwater plant detritus and poor water quality, the bottom silt is easily disturbed during flood season, which can cause turbidity of the water body. If the deposited suspended solids and silt enter the water intake pipe, it will directly affect the water quality. At the same time, the water temperature of the deep water of the reservoir changes greatly compared with the original river channel, and the vertical water temperature of the reservoir basically presents a decreasing stratified distribution. If the water is only taken from the bottom layer, it will have an adverse effect on the downstream ecological environment such as agricultural irrigation and fish reproduction. Therefore, the existing water intake structure is set to improve the water quality and reduce the adverse effects of low-temperature water on the downstream aquatic ecology and agricultural irrigation. For a silt-laden river, sedimentation will inevitably occur in the reservoir. The above-mentioned accumulated silt will affect the lower water intake. During the normal operation of the reservoir, the water level amplitude changes greatly due to the requirements of water and sediment regulation, flood control and flood mitigation, and the water supply project, especially urban life and industrial water supply, requires continuous water supply. Therefore, it is a great challenge to continuously take water from the water intake in a large water level amplitude and silt-laden reservoir. SUMMARY

[0003] In order to solve the above problems, the utility model provides a layered water taking device for the bank of the reservoir of many silt, which can specifically adopt the following technical scheme:

[0004] The layered water taking device for the bank of the reservoir of many silt, comprising a plurality of elevation different gate chambers, the gate chambers are stacked from bottom to top or arranged in parallel as a row, the front side of each gate chamber is sequentially provided with a trash rack and a water intake gate along the water flow direction, and the rear side of the gate chamber is provided with a valve chamber, the valve chamber is stacked from bottom to top, and the number of valve chambers is equal to the number of gate chambers, each valve chamber is provided with a water inlet pipe leading from the corresponding gate chamber, the water inlet pipe is provided with an adjusting valve, and all water inlet pipes are connected with a mother pipe vertically penetrating the valve chamber, and the mother pipe is connected with a water diversion equipment.

[0005] The elevation of the gate chamber is divided into at least two kinds, which all adopt a breast wall type gate chamber structure, and a flat bottom wide top weir is used at the inlet.

[0006] The front side of the trash rack is provided with a trash grabbing bucket, and the water intake gate adopts a steel laminated beam gate with a height of 2m per section.

[0007] The adjusting valve adopts an electric eccentric half-ball valve, an emptying and overhauling valve is arranged on the connecting pipe of the mother pipe and the water diversion equipment, one crane is arranged in each valve chamber, and a lifting hole is formed in the top plate of the valve chamber.

[0008] When the gate chambers are arranged in a stack from bottom to top, all the gate chambers share one trash rack, and each gate chamber is correspondingly provided with a water intake gate, and the water intake gates are arranged in sequence along the water flow direction from deep to shallow.

[0009] When the gate chambers are arranged in parallel into a row, each gate chamber is correspondingly provided with a trash rack and a water intake gate.

[0010] The shore-type layered water intake device for the multi-silt reservoir provided by the utility model is arranged relying on the reservoir bank, can fully utilize the terrain advantage, save the engineering cost, and is convenient for later management and maintenance; the device sets the gate chambers with different elevations, and sets the stacked beam type water intake gate at the gate chamber entrance, so that when the reservoir area produces large silt accumulation, the bottom section stacked beam gate buried by the silt is permanently closed, and the opening and closing of the upper section gate are not affected, therefore, the water intake is not affected by the silt accumulation of the reservoir; when the water level of the reservoir increases or decreases, the number of the stacked beam gate of the corresponding gate chamber is adjusted, so that the surface layer clean water can be continuously taken, that is, the water intake is not affected by the change of the water level of the reservoir. The utility model has the advantages of simple structure, convenient construction, easy maintenance, high water intake flexibility, high water intake success rate, effective guarantee of the discharged water temperature, effective improvement of the water quality, and very suitable for the water intake of the multi-silt reservoir. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of embodiment 1.

[0012] Figure 2 is an A-A sectional view of Figure 1 .

[0013] Figure 3 is a structural schematic view of embodiment 2.

[0014] Figure 4 is a B-B view of Figure 3 .

[0015] Figure 5 is a C-C view of Figure 3 .

[0016] Figure 6 is a D-D view of Figure 3 . DETAILED DESCRIPTION

[0017] The utility model discloses a layered water taking device for the bank of the reservoir with much silt, including a plurality of different elevation sluice chamber, the sluice chamber is from bottom to top laminated arrangement or parallel arrangement as a row, the front side of each sluice chamber is sequentially provided with the trash rack and the water taking door along the water flow direction, and the rear side of the sluice chamber is provided with the valve chamber, the valve chamber is from bottom to top laminated arrangement, and the valve chamber number is equal to the sluice chamber number, and the water inlet pipe of each valve chamber is provided with the adjusting valve, and all water inlet pipes are connected with the mother pipe of vertical through valve chamber, and the mother pipe is connected with the water diversion equipment. The elevation of the sluice chamber is divided into two kinds at least, and they all adopt the breast wall type sluice chamber structure, and the import adopts the flat bottom wide top weir. The front side of the trash rack is provided with the trash grab, and the water taking door adopts the steel laminated beam door with every section height 2m. The adjusting valve adopts the electric eccentric half ball valve, and the connecting pipe of the mother pipe and the water diversion equipment is provided with the venting and overhauling valve. Each valve chamber is provided with a crane, and the valve chamber top plate is provided with the hoisting hole.

[0018] The embodiment of the utility model will be described in detail below with reference to the drawings, and the embodiment is implemented on the premise of the technical scheme of the utility model, and detailed implementation mode and specific working process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0019] Embodiment 1:

[0020] As Figure 1 、 2 The elevation of the sluice chamber in the embodiment is three kinds, including the bottom layer sluice chamber 101, the middle layer sluice chamber 102 and the high layer sluice chamber 103, each kind of sluice chamber is two and is parallelly arranged in the same layer, and the bottom layer sluice chamber 101, the middle layer sluice chamber 102 and the high layer sluice chamber 103 of the same side are laminated from bottom to top. The import of each sluice chamber is provided with a water taking door, including the bottom layer water taking door 21, the middle layer water taking door 22 and the high layer water taking door 23, and for the three sluice chambers of the same side laminated arrangement, the water taking door is sequentially arranged from deep to shallow along the water flow direction, namely the bottom layer water taking door 21 is in front, the middle layer water taking door 22 is in the middle, and the high layer water taking door 23 is behind, and the bottom of the three gradually rises, therefore, along the water flow direction, it is arranged in the form of steps. The three sluice chambers of the same side laminated arrangement share a trash rack 3, and the trash rack 3 is arranged at the front side of the bottom layer water taking door 21, and the trash rack 3 is further provided with the trash grab 4 at the front side.

[0021] The valve chamber is correspondingly arranged behind the gate chamber, and includes two bottom valve chambers 51, two middle valve chambers 52 and two high valve chambers 53, and the bottom valve chambers 51, the middle valve chambers 52 and the high valve chambers 53 on the same side are arranged in a stack from bottom to top to form a group. A vertical mother pipe 8 is arranged in the valve chamber, and in the embodiment, the valve chamber is two groups, and the mother pipe 8 is two pipes. A water inlet pipe 6 is arranged in each valve chamber and connected to the corresponding gate chamber, and an adjusting valve 7 is arranged on each water inlet pipe 6, and all the water inlet pipes 6 in the same group are connected to the corresponding mother pipe 8, and each mother pipe 8 is connected to a water diversion device 9.

[0022] In the embodiment, the gate chamber adopts a breast wall type gate chamber structure, and a flat bottom wide top weir is arranged at the inlet. The specific size should be determined according to the design flow and the characteristic water level, and the elevation of the top of the gate chamber should not be lower than the maximum value of the sum of the design and checking operation water retaining level, the wave and siltation calculation height and the corresponding safety height. The water intake gate adopts a steel laminated gate with a height of 2 m. In order to increase the reliability of water intake, a plurality of water inlet pipes 6 can be arranged in each valve chamber from top to bottom. In order to prevent the front edge of the water inlet pipe 6 from generating a through funnel vortex and to ensure the pressure state of the water inlet pipe 6, the inlet of the water inlet pipe 6 arranged under the reservoir characteristic water level should meet the minimum submergence depth required by the specification. In addition, a concrete wrapping layer is arranged outside the bending part of the water inlet pipe 6. The adjusting valve 7 adopts an electric eccentric half-ball valve. The connecting pipe of the mother pipe 8 and the water diversion device 9 is provided with a venting and repairing valve 10 for preventing the mother pipe 8 from being silted. A crane 11 is arranged in each valve chamber, and a lifting hole 12 is formed in the top plate of the valve chamber. When the valve is repaired, the repairing valve is first horizontally lifted to the middle lifting hole 12 by the crane 11 and then vertically lifted to the top repairing platform for repairing. The trash rack 3, the trash grabbing bucket 4 and the laminated gate are all opened and closed by a bidirectional gate machine 13. The laminated gate lifted out can be placed in the gate warehouse 14 beside the top laminated gate.

[0023] The gate chamber is arranged in layers and the water intake gate is in a stepped manner in the embodiment, which can effectively reduce the siltation in the water intake gate chamber on the basis of fully saving the engineering cost. By using the above device, the water intake guarantee rate is high, the released water temperature is effectively guaranteed, the water quality is effectively improved, and various conditions of water level change operation and siltation of the reservoir with much silt are flexibly adapted.

[0024] Embodiment 2:

[0025] As Figures 3-6As shown, three elevation gate chambers are used in this embodiment, which are arranged in parallel and in a straight line, including the bottom layer gate chamber 101 in the middle and the middle layer gate chamber 102 and the high layer gate chamber 103 on both sides thereof. The above-mentioned bottom layer gate chamber 101, middle layer gate chamber 102 and high layer gate chamber 103 are all two. A water intake gate is arranged at the inlet of each gate chamber, i.e. two bottom layer water intake gates 21, two middle layer water intake gates 22 and two high layer water intake gates 23. A trash screen 3 is arranged in front of each water intake gate, and a trash grab 4 is arranged in front of each trash screen 3.

[0026] The rear side of the above-mentioned gate chamber is provided with the bottom layer valve chamber 51, middle layer valve chamber 52 and high layer valve chamber 53 in a stack from bottom to top. Two vertical mother pipes 8 are arranged in the above-mentioned valve chambers. The bottom layer valve chamber 51 is provided with the water inlet pipe 6 leading out from the two bottom layer gate chambers 101, and the middle layer valve chamber 52 is provided with the water inlet pipe 6 leading out from the two middle layer gate chambers 102, and the high layer valve chamber 53 is provided with the water inlet pipe 6 leading out from the two high layer gate chambers 103. The above-mentioned water inlet pipe 6 is divided into two groups, each of which includes three water inlet pipes 6 leading out from the bottom layer valve chamber 51, middle layer valve chamber 52 and high layer valve chamber 53, and each group of water inlet pipes 6 is connected to a mother pipe 8. The adjusting valve 7 is arranged on each water inlet pipe 6, and each mother pipe 8 is connected to a water diversion equipment 9.

[0027] In this embodiment, the gate chamber adopts the breast wall type gate chamber structure, and the flat bottom wide top weir is used at the inlet. The specific size should be determined according to the design flow and characteristic water level, and the elevation of the top of the gate chamber should not be lower than the maximum value of the sum of the design, checking operation water retaining level, wave and silt calculation height and corresponding safety height. The water intake gate adopts the steel stop log gate with a height of 2m per section. In order to increase the reliability of water intake, multiple water inlet pipes 6 can be arranged in each valve chamber from top to bottom. In order to prevent the front edge of the water inlet of the water inlet pipe 6 from generating a through funnel vortex and to ensure the pressure state of the water inlet, the inlet of the water inlet pipe 6 arranged under the reservoir characteristic water level should meet the minimum submergence depth required by the specification. In addition, a concrete wrapping layer is arranged outside the turning part of the water inlet pipe 6. The adjusting valve 7 adopts the electric eccentric half ball valve. The connection pipe of the mother pipe 8 and the water diversion equipment 9 is provided with the venting and repairing valve 10 for preventing the mother pipe 8 from being silted. A crane 11 is arranged in each valve chamber, and a hoisting hole 12 is formed in the top plate of the valve chamber. When the valve is repaired, the repairing valve is first horizontally hoisted to the middle hoisting hole 12 by the crane 11 and then vertically hoisted to the top repairing platform for repairing. The trash screen 3, trash grab 4 and stop log gate are all opened and closed by the two-way gate machine 13. The stop log gate hoisted out can be placed in the gate house beside the top stop log gate.

[0028] The parallel and linearly arranged gate chambers in the embodiment are suitable for large reservoirs or wide rivers, and are especially suitable for the case that the bank slope is steep and the rock is solid and stable.

[0029] It should be noted that in the description of the present application, the terms indicating the orientation or position relationship such as "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application.

Claims

1. A near-shore layered water intake device for a multi-silted reservoir, characterized in that: The application relates to a water intake device, which comprises a plurality of elevation-different gate chambers, the gate chambers are arranged in layers from bottom to top or in parallel as a row, the front side of each gate chamber is sequentially provided with a trash rack and a water intake gate along the water flow direction, the rear side of the gate chamber is provided with a valve chamber, the valve chambers are arranged in layers from bottom to top, the number of the valve chambers is equal to that of the gate chambers, each valve chamber is provided with a water inlet pipe which is led out from the corresponding gate chamber, the water inlet pipe is respectively provided with an adjusting valve, all the water inlet pipes are connected with a mother pipe which is vertically arranged through the valve chamber, and the mother pipe is connected with the water intake device.

2. The inshore layered water intake device for a multi-silt reservoir according to claim 1, characterized in that: The elevations of the gate chambers are divided into at least two kinds, chest wall type gate chamber structures are adopted, and flat bottom wide top weirs are adopted at the inlets.

3. The inshore layered water intake device for a multi-silt reservoir according to claim 1, characterized in that: The front side of the trash rack is provided with a trash grabbing bucket, and the water intake gate adopts a steel laminated beam gate with a height of 2m.

4. The inshore layered water intake device for a multi-silt reservoir according to claim 1, characterized in that: The adjusting valve adopts an electric eccentric half-ball valve, a venting and repairing valve is arranged on the connecting pipe of the mother pipe and the water intake device, one crane is arranged in each valve chamber, and a lifting hole is formed in the top plate of the valve chamber.

5. The inshore layered water intake device for a multi-silt reservoir according to claim 1, characterized in that: When the gate chambers are arranged in layers from bottom to top, all the gate chambers share one trash rack, and each gate chamber is correspondingly provided with one water intake gate, and the water intake gates are sequentially arranged from deep to shallow along the water flow direction.

6. The inshore layered water intake device for a multi-silt reservoir according to claim 1, characterized in that: When the gate chambers are arranged in parallel as a row, each gate chamber is correspondingly provided with one trash rack and one water intake gate.

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