Water taking hub device for water conservancy project and using method

Abstract

The invention discloses a water taking hub device for a water conservancy project and a using method, the water taking hub device comprises a water retaining frame, a first water gate is arranged on one side of the water retaining frame, a second water gate is arranged on the other side of the water retaining frame, and driving mechanisms are installed above the first water gate and the second water gate. When upper-layer water and lower-layer water in a river channel flow into the water retaining frame, the upper-layer water and the lower-layer water can be mixed in the first confluence area under the action of the water retaining plate in the first confluence area, then the first rotating blades are driven by the first rotating rod to rotate, the mixed river channel water is mixed again, and then the river channel water is mixed through the next confluence area; a fourth temperature sensor detects the temperature of the mixed river channel water, if the river channel water is not mixed completely, a second motor can be started to drive a second rotating blade to rotate, the river channel water is mixed again, and in this way, the upper-layer water and the lower-layer water of the river channel can be mixed more evenly through multiple times of mixing.

Description

Technical Field

[0001] The invention relates to the technical field of water intake hubs for hydraulic engineering, and in particular to a water intake hub device for hydraulic engineering. Background Art

[0002] Water conservancy projects are the various projects built to control and allocate natural surface water and groundwater to achieve the purpose of promoting benefits and eliminating harm. Water diversion and irrigation is a water conservancy project facility that draws water from the source to irrigate farmland. According to the amount of water in the river, the water level and the elevation of the irrigation area, it can be divided into two categories: damless water diversion and dammed water diversion. In damless water diversion, the water level and flow of the river can meet the water intake requirements, and there is no need to build a dam to raise the water level. Generally, only one canal is built as a branch diversion of the river, and then the river water is diverted to the vicinity of the farmland, so as to irrigate the crops in the farmland.

[0003] For crop irrigation, it is necessary to open the sluice gates to release water. Due to the lower temperature at night, the temperature difference between the upper and lower layers of the river is large, and the water temperature of the lower layer is lower. Most of the water flowing out of the existing sluice gates or water intake devices is from the lower layer. Irrigating farmland with lower temperature river water can easily cause crops to wilt, thus affecting their growth.

[0004] The existing treatment method allows the river water in the lower layer to be fully mixed with the river water in the upper layer when the gate is opened to release water, thereby making the water temperature of the river water more uniform, effectively reducing the impact of low-temperature river water irrigation on the growth of crops in farmland.

[0005] However, in actual use, when the water intake hub opens the gate to release water, the water in the river flows through the water intake hub and into the farmland. The water flow is large and rapid. When the water flow is large, the upper layer water and the lower layer water flowing through the water intake hub cannot be fully mixed, and the temperature of the lower layer water is still lower.

[0006] In order to cope with the situation that the upper layer water and the lower layer water flowing through the water intake hub cannot be fully mixed, multiple "high-speed" rotating stirring blades are directly installed in the existing water intake hubs to continuously stir the upper layer water and the lower layer water passing through the water intake hub at a high speed. Although this method has achieved rapid mixing of the upper layer water and the lower layer water flowing through the water intake hub to a certain extent, the continuous high-load operation of multiple "high-speed" rotating stirring blades has also greatly increased the loss of electric energy.

[0007] In the face of the above situation, how to effectively solve the degree of mixing of the upper water and the lower water when flowing through the water intake hub, and at the same time effectively reduce the electric energy consumed by the stirring and rotating mechanism during mixing, has become a problem that needs to be solved. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a water intake hub device for a water conservancy project, which realizes that when the sluice gate is opened to release water, the control mechanism causes the rotating blades to rotate, so that the upper river water and the lower river water are evenly mixed when flowing, which is more convenient for irrigation of crops.

[0009] To achieve the above objectives, the present invention provides the following technical solutions: a water intake hub device for a water conservancy project, comprising a water retaining frame, a first water gate is arranged on one side of the water retaining frame, a second water gate is arranged on the other side of the water retaining frame, and a driving mechanism is installed above the first water gate and the second water gate.

[0010] A plurality of confluence areas are arranged inside the water retaining frame, wherein a first confluence area is provided with a first rotating blade, and a second rotating blade is provided in each of the tail confluence areas.

[0011] A first motor and a second motor are fixedly arranged on the outer side of the water retaining frame. The first motor is driven to connect to the first rotating blade, and the second motor is driven to connect to the second rotating blade.

[0012] A plurality of first water retaining plates are arranged below the inner wall of the water retaining frame, and a plurality of second water retaining plates are arranged above the inner wall of the water retaining frame.

[0013] Each confluence area is equipped with a first water baffle and a second water baffle. The second water baffle in each confluence area is located downstream of the first water baffle. The distance between the upper end of the first water baffle and the lower end of the second water baffle is the same as the vertical height of the confluence area.

[0014] Wherein, the first water baffle plate and the second water baffle plate are both provided with a flow-blocking curved surface facing upstream of the water flow direction.

[0015] A first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor are arranged inside the water retaining frame. The first temperature sensor is located in the water inlet area upstream of the first first water baffle plate inside the water retaining frame, the second temperature sensor is located in the water inlet area upstream of the first second water baffle plate inside the water retaining frame, the third temperature sensor is located in the water inlet area upstream of the second first water baffle plate, and the fourth temperature sensor is located in the water inlet area upstream of the last first water baffle plate.

[0016] As a preferred technical solution of the present invention, a first rotating rod and a second rotating rod are rotatably arranged inside the water retaining frame, the output end of the first motor is fixedly connected to the first rotating rod, and the output end of the second motor is fixedly connected to the second rotating rod.

[0017] The first rotating blade is fixedly installed on the outer side of the first rotating rod, and the second rotating blade is fixedly installed on the outer side of the second rotating rod.

[0018] The first rotating rod is located at the midpoint of a line connecting the upper end of the first water retaining plate and the lower end of the second water retaining plate in the first confluence area.

[0019] The second rotating rod is located at the midpoint of a line connecting the upper end of the first water retaining plate and the lower end of the second water retaining plate in the last confluence area.

[0020] As a preferred technical solution of the present invention, the flow-blocking curved surface of the first water baffle is bent toward the direction of the first sluice gate, and the flow-blocking curved surface of the second water baffle is bent toward the direction of the first sluice gate.

[0021] As a preferred technical solution of the present invention, the first temperature sensor, the third temperature sensor and the fourth temperature sensor are all arranged below the water retaining frame, and the second temperature sensor is arranged above the water retaining frame.

[0022] The present invention provides a water intake hub device for a water conservancy project, comprising the following steps:

[0023] S1. When the crops in the farmland need to be irrigated, the first sluice gate and the second sluice gate on both sides of the water retaining frame are opened, and the upper and lower water in the river will flow into the water retaining frame together. Under the joint action of the first water retaining plate and the second water retaining plate in the first confluence area, the upper and lower water will be collected in the confluence area. The first motor will be powered at the initial power P min When started, the first motor drives the first rotating blade to rotate.

[0024] S2. Assume that when the first sluice gate is opened, the temperature parameter value of the lower layer of water in the river detected by the first temperature sensor is W1, and the temperature parameter value of the lower layer of water in the river detected by the second temperature sensor is W2.

[0025] S3. After the river water is mixed by the first rotating blade, the temperature parameter value detected by the third temperature sensor is W x ;

[0026] Calculate △W=W 均 -W x , where W 均 =(W1+W2) / 2;

[0027] If △W>0, the real-time power of the first motor P1=P min +△P, where △P∝△W.

[0028] S4. After being mixed by the first rotating blades, the water flowing into the water retaining frame will continue to flow to the next confluence area, flow through the first water retaining plate and the second water retaining plate in the confluence area, and mix the river water. After mixing, the river water continues to flow to the confluence area at the rear position, and finally flows towards the confluence area at the tail position.

[0029] S5. The temperature parameter value detected by the fourth temperature sensor is W 末 .

[0030] S5.1. If W 末 ≥W 均 -φ, the river water flows directly through the first water baffle and the second water baffle in the tail confluence area, and then flows out from one end of the water baffle frame, where φ is the temperature fluctuation reference value preset by the system, and the temperature fluctuation reference value: As the water continues to flow backward, the cold and hot water flows will continue to mix. Therefore, before being discharged from the water intake hub, if there is a small deviation from the ideal mixing temperature, there is no need to continue to start the second motor to drive the second rotating blade for mixing.

[0031] S5.2.W 末 <W 均 -φ, the second motor starts, and the second motor drives the second rotating blade to rotate, mixing the river water again, wherein the output power of the second motor P2∝[(W 均 -φ)-W 末 ].

[0032] The present invention provides a water intake hub device for a water conservancy project, which has the following beneficial effects:

[0033] (1) The present invention sets a first water baffle, a second water baffle and a temperature sensor. When the upper water and the lower water in the river flow into the water baffle frame, they are mixed in the first confluence area under the action of the water baffle in the first confluence area. The first rotating blade is driven by the first rotating rod to rotate, and the mixed river water is mixed again. Then the river water passes through the next confluence area for mixing. The fourth temperature sensor detects the temperature of the mixed river water. If the river water is not completely mixed, the second motor can be started to drive the second rotating blade to rotate to mix the river water again. After multiple mixing, the upper water and the lower water in the river can be mixed more evenly.

[0034] (2) The present invention designs a dynamic mixing and stirring mode with continuous flow and segmented control, and intelligently controls the stirring rate according to the degree of continuous linear mixing of the upper layer water and the lower layer water, thereby further reducing the electric energy consumed by the mixing and stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0036] Figure 2 It is a schematic diagram of the cross-sectional structure of the water retaining frame of the present invention.

[0037] Figure 3 It is a schematic diagram of the confluence area structure of the present invention.

[0038] Figure 4 Schematic diagram of water flow when water is mixed.

[0039] In the figure: 1, water retaining frame, 101, confluence area; 2, first sluice gate; 3, driving mechanism; 4, second sluice gate; 5, first motor; 6, first water retaining plate; 7, second water retaining plate; 8, first temperature sensor; 9, second temperature sensor; 10, third temperature sensor; 11, fourth temperature sensor; 12a, first rotating blade, 12b, second rotating blade; 13, first rotating rod; 14, second motor; 15, second rotating rod; 16, flow retaining curved surface. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] Embodiment 1: The present invention designs a water intake hub device for a water conservancy project, which mainly includes the following contents:

[0042] Combination Figure 1 , Figure 2 , Figure 3 A water retaining frame 1 is provided on one side of the first water gate 2, and a second water gate 4 is provided on the other side of the water retaining frame 1. A driving mechanism 3 is installed below the first water gate 2, and a driving mechanism 3 is also installed above the second water gate 4. A plurality of confluence areas 101 are provided inside the water retaining frame 1, wherein a first rotating blade 12a is provided in the first confluence area 101, and a second rotating blade 12b is provided in the tail confluence area 101.

[0043] A first rotating rod 13 is rotatably provided inside the water retaining frame 1, a first motor 5 is fixedly provided on the outer side of the water retaining frame 1, an output end of the first motor 5 is fixedly connected to the first rotating rod 13, a first rotating blade 12a is installed on the outer side of the first rotating rod 13, and the first motor 5 rotates to drive the first rotating blade 12a to rotate, a second rotating rod 15 is rotatably provided inside the water retaining frame 1, a second motor 14 is fixedly provided on the outer side of the water retaining frame 1, an output end of the second motor 14 is fixedly connected to the second rotating rod 15, a second rotating blade 12b is installed on the outer side of the second rotating rod 15, and the second motor 14 rotates to drive the second rotating blade 12b to rotate.

[0044] The first rotating rod 13 is located at the midpoint of a line connecting the upper end of the first water retaining plate 6 and the lower end of the second water retaining plate 7 in the first confluence area 101 .

[0045] The second rotating rod 15 is located at the midpoint of the line connecting the upper end of the first water baffle plate 6 and the lower end of the second water baffle plate 7 in the last confluence area 101 .

[0046] The first water baffle plate 6 is arranged below the inner wall of the water baffle frame 1, and the second water baffle plate 7 is arranged above the inner wall of the water baffle frame 1, wherein each confluence area 101 is configured with a first water baffle plate 6 and a second water baffle plate 7, the second water baffle plate 7 in each confluence area 101 is located downstream of the first water baffle plate 6, the distance between the upper end of the first water baffle plate 6 and the lower end of the second water baffle plate 7 is the same as the vertical height of the confluence area 101, and the vertical height between the first water baffle frame 6 and the second water baffle frame 7 is set to be the same as the vertical height of the confluence area 101, so that the channel width of the water flow does not change during the flow.

[0047] Among them, the first water baffle plate 6 and the second water baffle plate 7 are both provided with a baffle curved surface 16 facing the upstream direction of the water flow direction. The baffle curved surface 16 of the first water baffle plate 6 is bent toward the direction of the first sluice gate 2, and the baffle curved surface 16 of the second water baffle plate 7 is bent toward the direction of the first sluice gate 2. The baffle curved surfaces 16 of the first water baffle plate 6 and the second water baffle plate 7 are both bent toward the direction of the first sluice gate 2. When the water flows through the first water baffle plate 6 and the second water baffle plate 7, the water can flow into the confluence area 101 under the cover of the baffle curved surface 16. In the confluence area 101, the upper layer of water can be mixed with the lower layer of water.

[0048] A first temperature sensor 8, a second temperature sensor 9, a third temperature sensor 10 and a fourth temperature sensor 11 are arranged inside the water retaining frame 1. The first temperature sensor 8 is located in the water inlet area upstream of the first first water baffle 6 inside the water retaining frame 1, the second temperature sensor 9 is located in the water inlet area upstream of the first second water baffle 7 inside the water retaining frame 1, the third temperature sensor 10 is located in the water inlet area upstream of the second first water baffle 6, and the fourth temperature sensor 11 is located in the water inlet area upstream of the last first water baffle 6. The first temperature sensor 8, the third temperature sensor 10 and the fourth temperature sensor 11 are all arranged below the water retaining frame, and the second temperature sensor 9 is arranged above the water retaining frame 1.

[0049] Embodiment 2: In the present invention, a method for using a water intake hub device for a water conservancy project, the specific working principle is as follows:

[0050] First, when the crops in the farmland need to be irrigated, the first sluice gate 2 and the second sluice gate 4 on both sides of the water retaining frame 1 are opened, and the upper layer water and the lower layer water in the river channel will flow into the water retaining frame 1 together, the first temperature sensor 8 detects the temperature of the lower layer water in the river channel, and the second temperature sensor 9 detects the temperature of the lower layer water in the river channel. Under the joint action of the first water retaining plate 6 and the second water retaining plate 7 in the first confluence area 101, the upper layer water and the lower layer water are collected in the confluence area 101, and the first motor 5 is started, and the first motor 5 drives the first rotating blade 12a to rotate, as shown in FIG. Figure 4 As shown, the first rotating blade 12a rotates clockwise to "restrain" the cold water at the bottom layer to quickly flow out of this area.

[0051] Then, after being mixed by the first rotating blade 12a, the river water will flow to the next confluence area 101, and the third temperature sensor 10 will detect the temperature of the mixed river water. The river water will flow through the first water baffle 6 and the second water baffle 7 in the confluence area 101 to mix the river water again. After mixing, the river water will continue to flow to the confluence area 101 at the rear position, and finally flow towards the confluence area 101 at the tail position.

[0052] At the confluence area 101, the fourth temperature sensor 11 detects the mixed river water again. 末 ≥W 均 -φ, the river water flows directly through the first water retaining plate 6 and the second water retaining plate 7 in the tail confluence area 101, and then flows out from one end of the water retaining frame 1. If W 末 <W 均 -φ, the second motor 14 is started, and the second motor 14 drives the second rotating blade 12b to rotate, such as Figure 4 As shown, the second rotating blade 12b rotates clockwise, "suppressing" the cold water at the bottom from flowing out of this area quickly, and mixing the river water again. The stirred river water flows out from one side of the water retaining frame 1.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water intake hub device for a water conservancy project, comprising a water retaining frame (1), a first water gate (2) being arranged on one side of the water retaining frame (1), a second water gate (4) being arranged on the other side of the water retaining frame (1), a driving mechanism (3) being installed above both the first water gate (2) and the second water gate (4), characterized in that: A plurality of confluence areas (101) are arranged inside the water retaining frame (1), wherein a first rotary blade (12a) is arranged in the first confluence area (101), and a second rotary blade (12b) is arranged in the tail confluence area (101); A first motor (5) and a second motor (14) are fixedly arranged on the outer side of the water retaining frame (1); the first motor (5) is driven to connect to the first rotating blade (12a), and the second motor (14) is driven to connect to the second rotating blade (12b); A plurality of first water retaining plates (6) are arranged below the inner wall of the water retaining frame (1), and a plurality of second water retaining plates (7) are arranged above the inner wall of the water retaining frame (1); Each of the confluence areas (101) is provided with a first water baffle (6) and a second water baffle (7); the second water baffle (7) in each of the confluence areas (101) is located downstream of the first water baffle (6); and the distance between the upper end of the first water baffle (6) and the lower end of the second water baffle (7) is the same as the vertical height of the confluence area (101); Wherein, the first water baffle plate (6) and the second water baffle plate (7) are both provided with a flow-blocking curved surface (16) facing upstream of the water flow direction; A first temperature sensor (8), a second temperature sensor (9), a third temperature sensor (10) and a fourth temperature sensor (11) are arranged inside the water retaining frame (1); the first temperature sensor (8) is located in a water inlet area upstream of a first first water retaining plate (6) inside the water retaining frame (1); the second temperature sensor (9) is located in a water inlet area upstream of a first second water retaining plate (7) inside the water retaining frame (1); the third temperature sensor (10) is located in a water inlet area upstream of a second first water retaining plate (6); and the fourth temperature sensor (11) is located in a water inlet area upstream of a last first water retaining plate (6).

2. A water intake hub device for a water conservancy project according to claim 1, characterized in that: A first rotating rod (13) and a second rotating rod (15) are rotatably arranged inside the water retaining frame (1); the output end of the first motor (5) is fixedly connected to the first rotating rod (13), and the output end of the second motor (14) is fixedly connected to the second rotating rod (15); The first rotating blade (12a) is fixedly mounted on the outside of the first rotating rod (13), and the second rotating blade (12b) is fixedly mounted on the outside of the second rotating rod (15); The first rotating rod (13) is located at the midpoint of a line connecting an upper end of the first water retaining plate (6) and a lower end of the second water retaining plate (7) in the first confluence area (101); The second rotating rod (15) is located at the midpoint of a line connecting the upper end of the first water baffle plate (6) and the lower end of the second water baffle plate (7) in the last confluence area (101).

3. A water intake hub device for a water conservancy project according to claim 1, characterized in that: The flow-blocking curved surface (16) of the first water baffle plate (6) is bent in the direction of the first sluice gate (2), and the flow-blocking curved surface (16) of the second water baffle plate (7) is bent in the direction of the first sluice gate (2).

4. A water intake hub device for a water conservancy project according to claim 1, characterized in that: The first temperature sensor (8), the third temperature sensor (10) and the fourth temperature sensor (11) are all arranged below the water retaining frame (1), and the second temperature sensor (9) is arranged above the water retaining frame (1).

5. A method for using a water intake hub device for a water conservancy project, characterized in that: A water intake hub device for a water conservancy project according to any one of claims 1 to 4 is used, comprising the following steps: S1. When the crops in the farmland need to be irrigated, the first sluice gate (2) and the second sluice gate (4) on both sides of the water retaining frame (1) are opened, and the upper layer water and the lower layer water in the river flow into the water retaining frame (1) together. Under the joint action of the first water retaining plate (6) and the second water retaining plate (7) in the first confluence area (101), the upper layer water and the lower layer water are collected in the confluence area (101), and the first motor (5) is driven according to the initial power P min When started, the first motor (5) drives the first rotating blade (12a) to rotate; S2. When the first sluice gate (2) is opened, the first temperature sensor (8) detects that the temperature parameter value of the lower layer of water in the river is W1, and the second temperature sensor (9) detects that the temperature parameter value of the lower layer of water in the river is W2; S3. After the river water is mixed by the first rotating blade (12a), the temperature parameter value detected by the third temperature sensor (10) is W x ; Calculate △W=W 均 -W x , where W 均 =(W1+W2) / 2; If ΔW>0, the real-time power of the first motor (5) P1=P min +△P, where △P∝△W; S4. After the water flowing into the water retaining frame (1) is mixed by the first rotating blade (12a), it continues to flow to the next confluence area (101), flows through the first water retaining plate (6) and the second water retaining plate (7) in the confluence area (101), and mixes the river water. After mixing, the river water continues to flow to the confluence area (101) at the rear position, and finally flows towards the confluence area (101) at the tail position; S5. The temperature parameter value detected by the fourth temperature sensor (11) is W 末 ; S5.

1. If W 末 ≥W 均 -φ, the river water directly flows through the first water retaining plate (6) and the second water retaining plate (7) in the tail confluence area (101), and then flows out from one end of the water retaining frame (1), wherein φ is a temperature fluctuation reference value preset by the system; S5.

2. If W 末 <W 均 -φ, the second motor (14) is started, the second motor (14) drives the second rotating blade (12b) to rotate, and the river water is mixed and stirred again, wherein the output power P2 of the second motor (14) ∝[(W 均 -φ)-W 末 ].

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