Irrigation water diversion channel water recession system penetrating through flood drainage ditch underneath

Abstract

The irrigation water diversion channel water recession system penetrating through the flood drainage ditch downwards comprises a water diversion channel and the flood drainage ditch which intersect with each other, water flows through the water diversion channel from the bottom of the flood drainage ditch through an inverted siphon pipeline, the upstream and the downstream of the inverted siphon pipeline are an upper water diversion channel and a lower water diversion channel respectively, and a water inlet of the inverted siphon pipeline is provided with a water control gate. The tail end of the upper water diversion channel is connected with the flood drainage channel through a recession gate; the water control gate is horizontally arranged at the bottom of the upper diversion channel and used for opening and closing a water inlet of the inverted siphon pipeline; a desilting basin is arranged at the bottom of the upper diversion channel at the upstream of the water control gate. The inverted siphon pipeline is used in cooperation with the water control gate, irrigation through the flood drainage ditch can be achieved, the water diversion channel can be blocked after irrigation is finished, residual water in the upper water diversion channel is guided into the flood drainage ditch through the water recession gate, and water recession is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy channels, and in particular relates to a water withdrawal system for an irrigation water diversion channel passing under a flood drainage ditch. Background Art

[0002] Irrigation diversion channels are important water conservancy projects that divert water from water sources to farmland. If there is a flood drainage ditch, water cannot be diverted directly to farmland.

[0003] In addition, after irrigation, the water diversion channel needs to be drained to protect it. Otherwise, when encountering heavy rain, the retaining walls on both sides of the water diversion channel will be at risk of water overflowing. In addition, freezing problems in cold weather will also damage the water diversion channel. Summary of the invention

[0004] In order to solve the above problems, an embodiment of the present invention provides a water withdrawal system for an irrigation water diversion channel passing through a flood drainage ditch.

[0005] The invented irrigation water diversion channel drainage system under the flood drainage ditch comprises a water diversion channel and a flood drainage ditch intersecting each other, the water diversion channel passes water from the bottom of the flood drainage ditch through an inverted siphon pipe, the upstream and downstream of the inverted siphon pipe are an upper water diversion channel and a lower water diversion channel respectively, a water control gate is arranged at the water inlet of the inverted siphon pipe, the tail end of the upper water diversion channel is connected to the flood drainage ditch through the drainage gate; the water control gate is horizontally arranged at the bottom of the upper water diversion channel for opening and closing the water inlet of the inverted siphon pipe; the water control gate is controlled by a driving component; a sedimentation tank is arranged at the bottom of the upper water diversion channel upstream of the water control gate, and the cross-sectional shape of the upper water diversion channel in the sedimentation tank section is rectangular.

[0006] Optionally, the water control gate includes an outer shell, an inner ring and an outer ring, the outer shell is sleeved outside the outer ring, a flip blade is arranged between the inner ring and the outer ring, and a flip assembly is arranged between the outer ring and the outer shell.

[0007] Optionally, there are twelve flip blades, an inner fixed block is arranged in the middle of the inner end of the rotating blade, the inner fixed block is rotatably connected to the inner ring through a pin, an outer fixed block is arranged in the middle of the outer end of the rotating blade, and the outer fixed block is connected to the flip assembly.

[0008] Optionally, the flip assembly includes a rotating rod and a connecting rod, a connecting shaft is arranged on the inner side of the upper end of the rotating rod, the connecting shaft passes through the outer ring and is connected to the outer fixed block, an intermediate ball pin is arranged in the middle of the outer side of the rotating rod, a lower ball pin is arranged at the lower end, and ball pin sleeves are arranged at both ends of the connecting rod, and the ball pin sleeves at both ends of the connecting rod are sleeved on the intermediate ball pins or the lower ball pins of the two adjacent rotating rods.

[0009] Optionally, a connecting rod is connected to the middle ball stud and the lower ball stud of each rotating rod, and the outer end of the connecting shaft of one of the rotating rods is connected to the driving assembly.

[0010] Optionally, a support column is fixedly arranged above the inner ring, a support block is fixedly arranged on the top of the support column, and a plurality of support frames are evenly arranged between the support block and the top of the outer ring.

[0011] Optionally, the drive assembly drives a housing, a control panel, a hydraulic rod, a rack, a gear and a control rod, one end of the control rod is connected to the outer end of the connecting shaft, the other end of the control rod is connected to the gear, the gear is meshed with the rack, the rack is connected to the hydraulic rod, the hydraulic rod is connected to the control panel, the control panel is arranged on the ground, the control rod, the gear, the rack and the hydraulic rod are all arranged inside the drive housing, and the drive housing is arranged underground.

[0012] Optionally, the gear is a 1 / 4 sector gear.

[0013] Optionally, the relationship between the rotation angle of the rotating blade and the moving length of the rack is:

[0014]

[0015] Where, θ is the rotation angle of the flip blade, L is the rack moving length, z is the number of gear teeth, and m is the module.

[0016] The beneficial effects of the present invention are that the present invention can pass water from under the flood drainage ditch and smoothly introduce the water flow into the farmland. After the irrigation is completed, the excess water is directly discharged through the flood drainage ditch to achieve water withdrawal after irrigation, and the terrain and water source are reasonably used to irrigate the farmland; by arranging a sedimentation tank upstream of the water control gate, most of the silt can be intercepted, thereby reducing the impact of silt on the inverted siphon pipe; the water control gate is horizontally installed at the bottom of the upper water diversion channel to ensure that the water inlet meets the submergence depth to avoid the impact of water jump and vortex on the safety of the pipe; the moving distance of the hydraulic rod is controlled to limit the moving distance of the rack, and then the rotation angle of the rotating blade is controlled by the gear, so that the size of the water flow entering the inverted siphon pipe can be adjusted to achieve the purpose of controlling the water speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an inverted siphon pipeline for farmland irrigation according to the present invention.

[0018] Figure 2 It is a structural schematic diagram of a desilting tank of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the driving assembly of the present invention.

[0020] Figure 4 It is a connection relationship diagram of the gear and rack of the present invention.

[0021] Figure 5 It is a schematic diagram of a water control gate of the present invention.

[0022] Figure 6 The internal structure of the water control gate of the present invention is shown in FIG. Figure 1 .

[0023] Figure 7 The internal structure of the water control gate of the present invention is shown in FIG. Figure 2 .

[0024] Figure 8 It is a structural schematic diagram of the flip blade of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the connecting rod of the present invention.

[0026] Fig.10 It is a schematic diagram of the tooth pitch, arc length and pitch circle radius of the gear of the present invention.

[0027] Reference numerals:

[0028] Water control gate 1; outer shell 11; inner ring 12; outer ring 13; flip blade 14; outer fixing block 141; sealing strip 142; rotating rod 15; connecting shaft 151; middle ball pin 152; lower end ball pin 153; connecting rod 16; ball pin sleeve 161; supporting column 17; supporting block 18; supporting frame 19; inverted siphon pipe 2; sedimentation tank 3; upper water diversion channel 4; driving assembly 5; control rod 501; gear 502; rack 503; hydraulic rod 504; control panel 505; lower water diversion channel 6; flood discharge ditch 7; water withdrawal gate 8. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figure 1-Figure 10 As shown, the irrigation water diversion channel water withdrawal system of the present invention, which passes through the flood drainage ditch, comprises a water diversion channel and a flood drainage ditch 7 that intersect each other. The water diversion channel passes water from the bottom of the flood drainage ditch 7 through an inverted siphon pipe 2. The upstream and downstream of the inverted siphon pipe 2 are the upper water diversion channel 4 and the lower water diversion channel 6 respectively. The water inlet of the inverted siphon pipe 2 is provided with a water control gate 1. The tail end of the upper water diversion channel 4 is connected to the flood drainage ditch 7 through a water withdrawal gate 8. The water control gate 1 is horizontally arranged at the bottom of the upper water diversion channel 4 to open and close the water inlet of the inverted siphon pipe 2. The water control gate 1 is controlled by a driving component. A sedimentation tank 3 is arranged at the bottom of the upper water diversion channel 4 upstream of the water control gate 1. The cross-section of the upper water diversion channel 4 in the sedimentation tank 3 section is rectangular. The water in the dam first enters the upper water diversion channel 4 and then enters the lower water diversion channel 6 through the inverted siphon pipe 2 and then irrigates the farmland. After the farmland irrigation is completed, the water control gate 1 is closed, and the remaining water in the upper water diversion channel 4 is connected to the flood drainage ditch 7 and directly discharged.

[0031] The water control gate 1 is arranged at the entrance of the inverted siphon pipe 2, and the water control gate 1 is arranged at the bottom of the upper water diversion channel 4. The water control gate 1 is used to open or close the water flow flowing to the inverted siphon pipe 2, and can control the speed of the water flow; the inverted siphon pipe 2 is arranged below the spillway; the driving component 5 is connected to the water control gate 1, and the driving component 5 is used to control the opening or closing of the water control gate 1; the sedimentation tank 3 is arranged upstream of the water control gate 1, the cross-section of the sedimentation tank 3 is rectangular, and the depth of the sedimentation tank 3 is greater than the depth of the upper water diversion channel 4. The sedimentation tank 3 can deposit the sand in the river water to reduce the pollution of the sand to the inverted siphon pipe 2 and the water control gate 1.

[0032] like Figure 5-Figure 7 As shown, the water control gate 1 includes an outer shell 11, an inner ring 12 and an outer ring 13. The outer shell 11 is sleeved on the outside of the outer ring 13. A flip blade 14 is arranged between the inner ring 12 and the outer ring 13. The flip blade 14 can rotate between the inner ring 12 and the outer ring 13. A flip component is arranged between the outer ring 13 and the outer shell 11. The flip component rotates between the outer ring 13 and the outer shell 11. The flip component is used to drive the flip blade 14 to rotate, and the flip component is sealed between the outer ring 13 and the outer shell 11.

[0033] A support column 17 is fixedly arranged above the inner ring 12, a support block 18 is fixedly arranged at the top of the support column 17, and a plurality of support frames 19 are evenly arranged between the support block 18 and the top of the outer ring 13, and the support frames 19 can be steel bars. The support frames 19 play a role in supporting the entire water control gate 1, which can reduce the impact of water flow on the flip blade 14, and can also intercept garbage in the water flow to reduce the damage of the garbage to the flip blade 14.

[0034] There are twelve flip blades 14, which are arranged circumferentially between the inner ring 12 and the outer ring 13. An inner fixed block is fixedly arranged in the middle of the inner end of the rotating blade 14, and the inner fixed block is rotatably connected to the inner ring 12 through a pin. An outer fixed block 141 is fixedly arranged in the middle of the outer end of the rotating blade 14, and the outer fixed block 141 is connected to the flip assembly. The rotation of the flip assembly can drive the flip blade 14 to rotate through the outer fixed block 141, and the rotation of the flip blade 14 can open or close the water control gate 1.

[0035] like Figure 8 As shown, sealing strips 142 are provided on both sides of the flip blade 14. The two sealing strips 142 on each flip blade 14 are respectively provided on both sides of the flip blade 14, and the two sealing strips 14 are not on the same side. When the water control gate 1 is closed, the sealing strip 142 covers the intersection of the two flip blades 14 to prevent water from flowing out from the intersection.

[0036] like Figure 6 , Figure 7 , Fig. 9As shown, the flip assembly includes a rotating rod 15 and a connecting rod 16. A connecting shaft 151 is provided on the inner side of the upper end of the rotating rod 15. The connecting shaft 151 passes through the outer ring 13 and is fixedly connected to the outer fixing block 141. Specifically, a plurality of through holes are provided on the upper circumference of the outer ring 13 corresponding to the outer fixing block 141 of the flip blade 14. The connecting shaft 151 passes through the through holes and is fixedly connected to the outer fixing block 141. A sealing ring is provided between the connecting shaft 151 and the through hole of the outer ring 13. An intermediate ball pin 152 is provided in the middle of the outer side of the rotating rod 15, a lower ball pin 153 is provided at the lower end of the outer side of the rotating rod 15, and ball pin sleeves 161 are provided at both ends of the connecting rod 16. The ball pin sleeves 161 at both ends of the connecting rod 16 are sleeved on the intermediate ball pins 152 or the lower ball pins 153 of two adjacent rotating rods 15, that is to say, the ball pin sleeves 161 at both ends of the connecting rod 16 are simultaneously provided on two adjacent intermediate ball pins 152 or simultaneously provided on two adjacent lower ball pins 153, so that when the rotating rod 15 rotates, it can drive the connecting rod 16 to rotate, and only one rotating rod 15 needs to be rotated to drive all the rotating rods 15 to rotate through the connecting rod 16, and the rotation of all the rotating rods 15 can drive all the flip blades 14 to flip.

[0037] The middle ball pin 152 and the lower ball pin 153 of each rotating rod 15 are connected to a connecting rod 16 , and the outer end of the connecting shaft 151 of one rotating rod 15 is connected to the driving assembly 5 , and the rotating rod 15 is driven to rotate by the driving assembly 5 .

[0038] The driving assembly 5 includes a driving housing, a control panel 505, a hydraulic rod 504, a rack 503, a gear 502 and a control rod 501. One end of the control rod 501 is connected to the outer end of the connecting shaft 151. Specifically, the control rod 501 is fixedly connected to the outer side of the rotating rod 15 at a position corresponding to the connecting shaft 151. The other end of the control rod 501 is connected to the gear 502. The gear 502 is meshed with the rack 503. The rack 503 is connected to the hydraulic rod 504. The hydraulic rod 504 is connected to the control panel 505 via a cable. The control panel 505 is arranged on the ground. The control rod 501, the gear 502, the rack 503 and the hydraulic rod 504 are all arranged inside the driving housing. The driving housing is arranged underground.

[0039] The extension and retraction of the hydraulic rod 504 drives the rack 503 to move back and forth, and the reciprocating motion of the rack 503 drives the gear 502 to rotate forward or reversely. The rotation of the gear 502 drives the flip blade 14 to close or open through the control rod 501.

[0040] When the driving component 5 is working, the hydraulic rod 504 is started through the control panel 505, the hydraulic rod 504 is extended, and the rack 503 drives the gear 502 to rotate counterclockwise, thereby driving the rotating rod 15 to rotate counterclockwise, and the rotating rod 15 drives the flip blade 14 to open. After the hydraulic rod 504 is extended, the rack 503 is in a fixed state. At this time, the gear 502 and the rack 503 are engaged in a locked state, and the flip blade 14 remains in an open state. After use, turn off the switch, the hydraulic rod 504 contracts, and drives the gear 502 to rotate clockwise, thereby driving the flip blade 14 to close through the rotating rod 15.

[0041] like Figure 4 As shown, the gear is a 1 / 4 sector gear.

[0042] like Fig.10 As shown, the total number of teeth of a complete gear is set to z and the gear module is set to m.

[0043] Assume that the tooth pitch is p. The tooth pitch is a circular arc, that is, the arc length between the tooth widths of two adjacent teeth on the same side of any circumference of the gear, and

[0044] p=πm (1)

[0045] Assume the pitch circle radius of the gear is r,

[0046]

[0047] According to the arc length formula,

[0048] p=β×r (3)

[0049] Where β is the arc corresponding to one tooth pitch.

[0050] From (1), (2), and (3), we can get

[0051]

[0052] In the formula, β is the radian corresponding to one tooth pitch. Convert the radian system to the angle system, then the angle corresponding to one tooth pitch is

[0053]

[0054] Assume the moving length of the rack is L, then

[0055]

[0056] Where θ is the rotation angle of the flip blade, which is equal to the rotation angle of the gear; α is the angle corresponding to one tooth pitch, and p is the tooth pitch.

[0057] From (5) and (6), we can get

[0058]

[0059] Where θ is the rotation angle of the flip blade.

[0060] From (1) and (7), we can get that the rotation angle of the rotating blade is

[0061]

[0062] Where θ is the rotation angle of the flip blade, ranging from 0° to 90°, L is the rack moving length, z is the number of gear teeth, and m is the gear module.

[0063] It can be seen from formula (8) that the moving length of the rack 503 determines the rotation angle of the flip blade 14. The longer the moving length of the rack 503 is, the larger the opening angle of the flip blade 14 is. The maximum flip angle of the flip blade 14 is 90°. When the flip blade flips 90°, the water flow speed is the largest. The water flow speed can be changed by changing the flip angle of the flip blade 14. The flip angle of the flip blade 14 is the same as the rotation angle of the gear 502, so the maximum rotation angle of the gear 502 is also 90°. Therefore, the gear 502 can be a 1 / 4 sector gear to meet the requirements.

[0064] When the irrigation diversion channel and the flood discharge ditch 7 intersect, the diversion channel needs to cross the flood discharge ditch 7 at the same elevation, and when no water is needed downstream of the diversion channel, the channel water is withdrawn into the flood discharge ditch 7. In the case of limited terrain, an inverted siphon is used to cross the flood discharge ditch 7, and when no water is needed downstream, the water control gate 1 and the water withdrawal gate 8 are used to link the diversion channel water to the flood discharge ditch 7.

[0065] The inlet of the inverted siphon pipe 2 is a shaft-type circular pipe, and the channel downstream of the pipe mouth is connected with the flood discharge ditch 7. A water control gate 1 is arranged at the inlet of the shaft-type circular pipe, and a water withdrawal gate 8 is arranged at the connecting section between the channel downstream of the pipe mouth of the shaft-type circular pipe and the flood discharge ditch 7. The water control gate 1 of the present invention is used in conjunction with the water withdrawal gate 8. When water is needed downstream of the water diversion channel, the water control gate 1 is opened, and the water withdrawal gate 8 is closed at the same time, so that the channel water flows downstream through the inverted siphon pipe 2; when water is not needed downstream, the water control gate 1 is closed, and the water withdrawal gate 8 is opened at the same time, so that the channel water withdraws into the flood discharge ditch 7.

[0066] The linked use of the water control gate 1 and the water discharge gate 8 of the present invention can not only enable the water diversion channel to pass through the flood discharge ditch when restricted by the terrain, but also enable water to be discharged through the linked use of the water control gate 1 and the water discharge gate 8 when no water is needed downstream.

[0067] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "top", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0069] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A drainage system for irrigation diversion channels passing under flood drainage ditches, characterized in that: include: A water diversion channel, the water diversion channel comprising an upper water diversion channel and a lower water diversion channel, the water diversion channel and the flood discharge ditch intersect each other; An inverted siphon pipe, wherein water flows through the bottom of the flood drainage ditch, and the upstream and downstream of the inverted siphon pipe are respectively connected to the upper water diversion channel and the lower water diversion channel, and the descending section of the inverted siphon pipe is a vertical shaft; A water control gate, which is arranged at the water inlet of the inverted siphon pipe and is used to adjust the water flow rate entering the inverted siphon pipe; The water withdrawal gate is arranged between the tail end of the upper water diversion channel and the flood discharge ditch, and is used to discharge the excess water directly through the flood discharge ditch after the irrigation is completed, so as to realize the water withdrawal after irrigation.

2. The drainage system for irrigation and diversion channels under flood drainage ditches according to claim 1 is characterized in that: The inner wall of the shaft of the inverted siphon pipe is provided with an internal thread, and the rotation direction of the internal thread is set to counterclockwise and clockwise in the northern hemisphere and the southern hemisphere respectively according to the geographical location of the project.

3. The drainage system for irrigation and diversion channels under flood drainage ditches according to claim 1 is characterized in that: The water control gate is horizontally arranged at the bottom of the upper water diversion channel and is used for opening and closing the water inlet of the inverted siphon pipeline.

4. The drainage system for irrigation and diversion channels under flood drainage ditches according to claim 1 is characterized in that: A sedimentation tank is arranged at the bottom of the upper water diversion channel upstream of the water control gate, and the cross-section shape of the upper water diversion channel in the sedimentation tank section is rectangular.

5. The drainage system for irrigation and diversion channels under flood drainage ditches according to claim 1, characterized in that: The water control gate comprises an outer shell, an outer ring and an inner ring from the outside to the inside, a flip blade is arranged between the inner ring and the outer ring, and a flip assembly is arranged between the outer ring and the outer shell.

6. The drainage system for irrigation and diversion channels under flood drainage ditches according to claim 5 is characterized in that: An inner fixed block is provided in the middle position of the inner end of the flip blade, and the inner fixed block is rotatably connected to the inner ring through a pin. An outer fixed block is provided in the middle of the outer end of the flip blade, and the outer fixed block is connected to the flip assembly. The rotation of the flip assembly drives the flip blade to rotate through the outer fixed block, and the rotation of the flip blade can open or close the water control gate.

7. The drainage system for irrigation and diversion channels passing under flood drainage ditches according to claim 5 is characterized in that: The front and back sides of the flip blade are both provided with sealing strips, and the two sealing strips on each flip blade are respectively provided on the two sides of the flip blade.

8. The drainage system for irrigation diversion channels passing under flood drainage ditches according to claim 5 is characterized in that: The flip assembly includes a rotating rod and a connecting rod, a connecting shaft is fixed at the inner upper end of the rotating rod, the connecting shaft passes through the outer ring and is connected to the outer fixed block, a plurality of through holes are arranged on the upper circumference of the outer ring corresponding to the external fixed block of the flip blade, the connecting shaft passes through the through holes and is fixedly connected to the outer fixed block, and a sealing ring is arranged between the connecting shaft and the through hole of the outer ring; an intermediate ball pin is arranged in the middle of the outer side of the rotating rod, a lower ball pin is arranged at the lower end, and ball pin sleeves are arranged at both ends of the connecting rod, the ball pin sleeves at both ends of the connecting rod are sleeved on the intermediate ball pin or the lower ball pin of the two adjacent rotating rods, and the intermediate ball pin and the lower ball pin of each rotating rod are connected to a connecting rod, and the rotation of one rotating rod can drive all the rotating rods to rotate synchronously through the connecting rod, and then drive all the flip blades to flip synchronously.

9. The drainage system for irrigation and diversion channels passing under flood drainage ditches according to claim 5, characterized in that: The water control gate is controlled by a driving assembly, which includes a driving housing, a control panel, a hydraulic rod, a rack, a gear and a control rod. The inner end of the control rod is connected to the flip assembly, and the outer end of the control rod is connected to the gear. The gear is meshed with the rack, the rack is connected to the hydraulic rod, and the hydraulic rod is connected to the control panel. The control rod, the gear, the rack and the hydraulic rod are all arranged inside the driving housing, and the driving housing is arranged underground.

10. The drainage system for irrigation and diversion channels passing under flood drainage ditches according to claim 9, characterized in that: The gear is a 1 / 4 sector gear, so the relationship between the moving length of the hydraulic rod and the flip angle of the flip blade is: In the formula, θ is the rotation angle of the flip blade, L is the moving length of the rack, the moving length of the hydraulic rod is equal to the moving length of the rack, z is the number of gear teeth, and m is the module.

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