A water delivery conduit device with adjustable cavity size and control method

Abstract

The application provides a water pipeline device with adjustable cavity size, which comprises a flat square pipeline, a plurality of vortex members, a water blocking member and a control block. The square pipeline is provided with a water inlet, a water outlet is arranged at the downstream end, and slide chute plates are arranged in parallel between the water inlet and the water outlet. A flow channel opening is formed in the middle of each slide chute plate. The vortex members are fixed in the square pipeline and are used to change the water flow to the two side walls of the square pipeline to generate vortex and make the water flow from the flow channel opening downstream of the vortex members to the next vortex member. The water blocking member comprises a magnetic blocking rod and a plurality of sliding rods. The sliding rods are arranged perpendicularly to the blocking rod and are fixedly connected to the blocking rod. The sliding rods are respectively connected to the corresponding slide chute plates in a sliding manner. The control block is made of magnet and is located on the surface of the square pipeline and is attracted to the blocking rod. The application also provides a water conveying control method with adjustable cavity size. The blocking rod position transformation can be used to clean the blockage of the square pipeline, so as to ensure the stable outflow of the water pipeline device.

Description

Technical Field

[0001] This invention relates to the field of drip irrigation water delivery technology, and in particular to a water delivery pipeline device and control method with adjustable cavity size. Background Technology

[0002] Micro-irrigation enables timely and appropriate irrigation of crop roots, effectively reducing surface water evaporation and greatly improving irrigation water utilization efficiency. The water delivery pipeline is the most critical component of a micro-irrigation system; its structure, hydraulic performance, and quality directly affect the uniformity and reliability of irrigation. Currently, most water delivery pipelines have high requirements for irrigation water quality, necessitating filtration before use. With the increasing severity of water scarcity, high-sediment-content water, reclaimed water, and slightly saline water are commonly used as irrigation sources. These sources contain large amounts of suspended solids, organic matter, and microorganisms. These substances increase the risk of blockage in the water delivery pipeline and reduce its lifespan. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a water delivery pipeline device with adjustable cavity size and a water delivery control method. To achieve the above objectives, this invention adopts the following technical solution:

[0004] This invention provides a water conveying pipeline device with adjustable cavity size, comprising a flat rectangular pipe, several vortex components, a water-blocking component, and a control block. The upstream end of the rectangular pipe has a water inlet, and the downstream end has a water outlet. Several parallel sliding plates are fixed within the rectangular pipe between the water inlet and the water outlet. Each sliding plate has a flow channel opening in its center, aligned with the water inlet and the water outlet. The vortex components are fixed within the rectangular pipe and located downstream of the water inlet and upstream of the flow channel opening, respectively. The vortex components are connected to the sliding plates... A confluence channel is provided between them. The vortex element is used to change the water flow towards the two side walls of the square pipe to generate a vortex and make the water flow from the downstream flow channel of the vortex element to the next vortex element. The water-blocking element is symmetrically arranged on both sides of the square pipe, including a magnetic baffle and several sliding rods. The baffle is arranged along the length of the square pipe and fits against the square pipe. The sliding rod is arranged perpendicularly to the baffle and fixedly connected. The sliding rod is slidably connected to the corresponding sliding groove plate. The control block is made of magnet and is located on the surface of the square pipe and is attracted to the baffle.

[0005] Furthermore, the vortex component has a sharp flow divider in the middle, the flow divider being aligned with the flow channel opening, and the vortex component has protrusions on both sides facing to the sides, with an arc-shaped vortex cavity between the protrusions and the flow divider.

[0006] Furthermore, the surface of the square pipe is provided with several protrusions along the length of the square pipe for limiting the control block. The protrusions are arranged in parallel and correspond to three positions of the stop bar from the inside out, namely the first working condition, the second working condition and the third working condition.

[0007] Furthermore, two limiting posts and a vent hole are fixedly connected to the side wall of the square pipe, and a limiting hole that cooperates with the limiting posts is opened at the position of the slide bar corresponding to the stop bar.

[0008] Furthermore, grooves are provided on the inner sides of both ends of the square pipe, and the two ends of the stop bar are disposed in the grooves.

[0009] Furthermore, the surface of the square pipe is provided with an adhesion layer that increases friction, and the control block is located on the adhesion layer.

[0010] Furthermore, the surface of the square pipe is provided with a protruding cavity that protrudes from the surface of the square pipe at the position corresponding to the vortex cavity.

[0011] The present invention also provides a water supply control method with adjustable cavity size, utilizing the pipeline device described above, comprising the following steps:

[0012] Under normal operating conditions, water flows into the square pipe and is bifurcated by the diversion part of the vortex component, forming two streams. The water flows along the vortex cavity and over the sill, where it is lifted up to form a turbulent flow. Part of the turbulent flow flows upward to form a vortex that continuously dissipates energy, while another part flows downward and collides with the confluence channel to dissipate energy. The distance between the baffle and the vortex component is controlled by the control block, corresponding to the first, second, and third operating conditions.

[0013] In the first working condition, that is, the distance between the baffle and the vortex component is the closest. Under the same water pressure, the vortex formed by the water flow is the smallest, the vortex intensity in the vortex zone is the smallest, the scouring force is also the weakest, and the water flow scouring path is close to the vortex component.

[0014] In the second working condition, that is, when the distance between the baffle and the vortex component is moderate, under the same water pressure, the vortex formed by the water flow is moderate, the vortex intensity in the vortex zone is moderate, the scouring force intensity is also moderate, and the water flow scouring path is shifted towards the baffle.

[0015] In the third working condition, where the distance between the baffle and the vortex component is the greatest, under the same water pressure, the vortex formed by the water flow is the largest, the vortex intensity in the vortex zone is the greatest, the scouring force is also the greatest, and the water flow scouring path is close to the baffle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The flow channel inside the square pipe mainly dissipates energy through vortex. The vortex can flush the sidewall of the flow channel, suppressing particle deposition on the sidewall and improving the anti-clogging performance of the water conveying pipeline device.

[0018] 2. The size of the vortex can be controlled by the control block, thereby controlling the flow rate of the water supply pipeline device. In addition, the position change of the baffle can clear blockages in the square pipe, ensuring a stable outflow of water from the water supply pipeline device.

[0019] 3. The water pipeline device has a simple structure, is easy to manufacture, and has a low cost. It is suitable for large-scale production and is more suitable for drip irrigation operations over large areas and long distances. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram illustrating the initiation of an explosion according to an embodiment of the present invention;

[0023] Figure 3 These are schematic diagrams illustrating three working conditions according to embodiments of the present invention;

[0024] Figure 4 This is a distribution diagram of flow velocity and vortex size under three working conditions according to an embodiment of the present invention;

[0025] Figure 5 The figures show the pressure-flow rate relationship curves at the outlet under three operating conditions according to embodiments of the present invention.

[0026] Figure 6 The diagram shows the trajectory of sediment particles under three working conditions in the embodiments of the present invention.

[0027] In the above attached figures: 1. Square pipe; 2. Vortex component; 3. Baffle; 4. Slide bar; 5. Control block; 6. Inlet; 7. Outlet; 8. Slide plate; 9. Flow channel; 10. Diversion section; 11. Sill; 12. Vortex cavity; 13. Protrusion; 14. Limiting post; 15. Vent hole; 16. Groove; 17. Detailed Implementation

[0028] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1As shown, this invention provides a water conveying pipeline device with adjustable cavity size, including a flat square pipe 1, several vortex components 2, a water-blocking component, and a control block 5. The square pipe 1 has an inlet 6 at its upstream end and an outlet 7 at its downstream end. Several parallel sliding groove plates 8 are fixed inside the square pipe 1 between the inlet 6 and the outlet 7. Each sliding groove plate 8 has a flow channel 9 in its center, aligned with the inlet 6 and the outlet 7. The vortex components 2 are fixed inside the square pipe 1 and located downstream of the inlet 6 and upstream of the flow channel 9, respectively. The vortex components 2 are aligned with the sliding grooves... A confluence channel 10 is provided between the plates 8. The vortex element 2 is used to change the water flow towards the two side walls of the square pipe 1 to generate a vortex and make the water flow from the downstream flow channel 9 of the vortex element 2 to the next vortex element 2. The water blocking element is symmetrically arranged on both sides of the square pipe 1, including a magnetic baffle 3 and several sliding rods 4. The baffle 3 is arranged along the length of the square pipe 1 and fits against the square pipe 1. The sliding rods 4 are arranged perpendicularly to the baffle 3 and fixedly connected. The sliding rods 4 are slidably connected to the corresponding sliding groove plate 8. The control block 5 is made of magnet material and is located on the surface of the square pipe 1 and is attracted to the baffle 3.

[0030] The working principle is as follows:

[0031] Water flows into the square pipe 1 through the inlet 6 on the drip irrigation pipe. It flows into the labyrinth flow channel inside the square pipe 1 to dissipate energy. The water flow is affected by the vortex component 2 and splits into two streams. The water flows along the side wall and then forms a vortex to continuously dissipate energy. After the water flow passes through the confluence channel 10 to dissipate energy, it flows to the next vortex component 2. This effectively reduces the flow index of the drip irrigation water delivery pipeline device and improves its hydraulic performance. Furthermore, the size of the vortex can be adjusted by the control block 5 and the baffle 3, thereby controlling the flow rate and flushing out blockages.

[0032] To facilitate understanding of this solution, as Figure 2 , Figure 3 As shown, the vortex component 2 has a sharp flow divider 11 in the middle, the flow divider 11 is aligned with the flow channel opening 9, and the vortex component 2 has protrusions 12 on both sides facing the sides, and an arc-shaped vortex cavity 13 is provided between the protrusions 12 and the flow divider 11.

[0033] like Figure 4 As shown, the water flows into the labyrinth channel and is bifurcated by the diversion part 11 of the vortex component 2, forming two streams. The water flows along the side wall and then, due to the symmetrical sills 12 set on both sides of the bottom of the vortex component 2, a diversion flow is formed. Part of the water flows upward and forms a vortex in the vortex cavity 13 to continuously dissipate energy, while part of the water flows downward and is flushed and dissipated through the confluence channel 10.

[0034] The vortex zone can play an energy dissipation role. The velocity difference between the velocity layers in the vortex zone is large, and mixing and friction consume energy. The vortex intensity in the vortex zone is high, and it consumes energy through scouring and friction with the sidewall. Moreover, the larger the vortex zone, the stronger the vortex intensity and the stronger the wall washing effect, thus inhibiting the deposition of particles on the sidewall.

[0035] In order to facilitate the limiting of the control block 5 and prevent the water flow from moving the baffle 3, the surface of the square pipe 1 is provided with a number of protrusions 14 arranged along the length of the square pipe 1 for limiting the control block 5. The protrusions 14 are arranged in parallel and correspond to three positions of the baffle 3 from the inside to the outside, namely the first working condition, the second working condition and the third working condition.

[0036] like Figure 5 As shown, hydraulic performance tests of the water delivery pipeline device were conducted in the laboratory. The inlet pressure head range of the water delivery pipeline device was set to 1~5 m, and a test was conducted every 1 m pressure head. The flow rate was measured using the graduated cylinder volume method. Regression analysis was performed on five different pressure head values ​​and corresponding flow rates within the 1~5 m pressure head range to fit the flow index and flow coefficient of the water delivery pipeline device. The flow rate of an anti-clogging drip irrigation water delivery pipeline device with adjustable cavity size under different pressures was obtained. Under the same pressure conditions, the flow rate of different operating conditions was ranked as follows: third operating condition > second operating condition > first operating condition. At the same time, the flow index of the water delivery pipeline device was 0.477-0.488, which showed good pressure compensation performance and could adapt to a wide pressure range.

[0037] To ensure that the movement of the stop lever 3 does not deviate, such as Figure 2 As shown, two limiting posts 15 and a vent hole 16 are fixedly connected to the side wall of the square pipe 1. The stop rod 3 has a limiting hole corresponding to the sliding rod 4, which cooperates with the limiting posts 15. The distance between the stop rod 3 and the vortex component 2 is adjusted by moving the stop rod 3 to adjust the vortex of different sizes.

[0038] To improve the limiting and sealing effect on the stop lever 3, such as Figure 2 As shown, grooves 17 are provided on the inner sides of both ends of the square pipe 1, and both ends of the stop bar 3 are located in the grooves 17.

[0039] To enhance the fixation of the square pipe 1 on the control block 5 and prevent the stop bar 3 from moving, an adhesion layer that increases friction is provided on the surface of the square pipe 1, and the control block 5 is located on the adhesion layer. The adhesion layer can be a plush layer or a rubber layer.

[0040] In order to increase the counteracting effect of the vortex formed in the square pipe 1 and increase the counteracting time of the water flow, a convex cavity protruding from the surface of the square pipe 1 is provided on the back side of the square pipe 1 at the position corresponding to the vortex cavity 13.

[0041] like Figure 6 As shown, the hydraulic performance of turbid water was simulated in Fluent software to obtain the motion path of sediment particles in the flow channel. Observations revealed that the sediment particles mainly undergo vortex motion in the vortex region 13. The flow velocity in the central region of the vortex zone within vortex region 13 is relatively low, making sediment accumulation easier. However, due to the large size of the vortex region 13, the water delivery pipeline is less prone to blockage. Figure 4 Under different operating conditions, the position of the stagnant zone in the vortex changes continuously, indicating that changing the operating conditions can automatically clean particles and improve the anti-clogging performance of the water pipeline device.

[0042] This invention also provides a water delivery control method with adjustable cavity size, such as... Figures 1-5 As shown, using the piping device described above, the following steps are included:

[0043] Under normal operating conditions, water flows into the square pipe 1 and is bifurcated by the diversion section 11 of the vortex component 2, forming two streams. The water flows along the vortex cavity 13 and passes over the sill 12, where the sill 12 lifts the water to form a turbulent flow. Part of the turbulent flow flows upward to form a vortex that continuously dissipates energy, while another part flows downward and collides with the confluence channel 10 to dissipate energy. The distance between the baffle 3 and the vortex component 2 is controlled by the control block 5, corresponding to the first, second, and third operating conditions.

[0044] In the first working condition, that is, the distance between the baffle 3 and the vortex component 2 is the closest. Under the same water pressure, the vortex formed by the water flow is the smallest, the vortex intensity of the vortex area is the smallest, the scouring force intensity is also the weakest, and the water flow scouring path is close to the vortex component 2.

[0045] In the second working condition, that is, when the distance between the baffle 3 and the vortex component 2 is moderate, under the same water pressure, the vortex formed by the water flow is moderate, the vortex intensity in the vortex zone is moderate, the scouring force intensity is also moderate, and the water flow scouring path is shifted towards the baffle 3.

[0046] In the third working condition, where the distance between the baffle 3 and the vortex component 2 is the farthest, under the same water pressure, the vortex formed by the water flow is the largest, the vortex intensity in the vortex zone is the largest, the scouring force intensity is also the largest, and the water flow scouring path is close to the baffle 3.

[0047] The vortex zone formed by the vortex element 2 can play an energy dissipation role. The velocity difference between the velocity layers in the vortex zone is large, and mixing and friction consume energy. The vortex zone formed in the third working condition is larger than that formed in the second working condition, which is larger than that formed in the first working condition. The larger the vortex zone, the stronger the vortex intensity, the stronger the wall washing effect, and the suppression of sidewall particle deposition.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water conveying pipeline device with adjustable cavity size, characterized in that, The device includes a flat, square pipe, several vortex components, a water-blocking component, and a control block. The square pipe has an inlet at its upstream end and an outlet at its downstream end. Several parallel sliding plates, fixed within the square pipe, are positioned between the inlet and outlet. Each sliding plate has a flow channel opening in its center, aligned with the inlet and outlet. The vortex components are fixed within the square pipe and located downstream of the inlet and upstream of the flow channel openings, respectively. A confluence channel is provided between the vortex components and the sliding plates. The aforementioned vortex element is used to change the water flow towards the two side walls of the square pipe to generate vortices and make the water flow from the downstream flow channel of the vortex element to the next vortex element. The water-blocking element is symmetrically arranged on both sides of the square pipe, including a magnetic baffle and several sliding rods. The baffle is arranged along the length of the square pipe and fits against the square pipe. The sliding rod is arranged perpendicular to the baffle and fixedly connected. The sliding rod is slidably connected to the corresponding sliding groove plate. The control block is made of magnetic material and is located on the surface of the square pipe and is attracted to the baffle. The vortex component has a sharp flow divider in the middle, which is aligned with the flow channel opening. The vortex component has protrusions on both sides facing to the sides, and an arc-shaped vortex cavity is provided between the protrusions and the flow divider.

2. The water conveying pipeline device with adjustable cavity size as described in claim 1, characterized in that, The surface of the square pipe is provided with several protrusions along the length of the square pipe for limiting the control block. The protrusions are arranged in parallel and correspond to three positions of the stop bar from the inside to the outside, namely the first working condition, the second working condition and the third working condition.

3. The water conveying pipeline device with adjustable cavity size as described in claim 1, characterized in that, Two limiting posts and a vent hole are fixedly connected to the side wall of the square pipe, and a limiting hole that cooperates with the limiting posts is opened at the position of the slide bar corresponding to the stop bar.

4. The water conveying pipeline device with adjustable cavity size as described in claim 3, characterized in that, The square pipe has grooves on the inner sides of both ends, and the two ends of the stop bar are located in the grooves.

5. The water conveying pipeline device with adjustable cavity size as described in claim 1, characterized in that, The surface of the square pipe is provided with an adhesion layer that increases friction, and the control block is located on the adhesion layer.

6. The water conveying pipeline device with adjustable cavity size as described in claim 1, characterized in that, The surface of the square pipe has a protruding cavity that protrudes from the surface of the square pipe at the position corresponding to the vortex cavity.

7. A water delivery control method with adjustable cavity size, characterized in that, The piping device according to any one of claims 1 to 6 includes the following steps: Under normal operating conditions, water flows into the square pipe and is bifurcated by the diversion part of the vortex component, forming two streams. The water flows along the vortex cavity and over the sill, where it is lifted up to form a turbulent flow. Part of the turbulent flow flows upward to form a vortex that continuously dissipates energy, while another part flows downward and collides with the confluence channel to dissipate energy. The distance between the baffle and the vortex component is controlled by the control block, corresponding to the first, second, and third operating conditions. In the first working condition, that is, the distance between the baffle and the vortex component is the closest. Under the same water pressure, the vortex formed by the water flow is the smallest, the vortex intensity in the vortex zone is the smallest, the scouring force is also the weakest, and the water flow scouring path is close to the vortex component. In the second working condition, that is, when the distance between the baffle and the vortex component is moderate, under the same water pressure, the vortex formed by the water flow is moderate, the vortex intensity in the vortex zone is moderate, the scouring force intensity is also moderate, and the water flow scouring path is shifted towards the baffle. In the third working condition, where the distance between the baffle and the vortex component is the greatest, under the same water pressure, the vortex formed by the water flow is the largest, the vortex intensity in the vortex zone is the greatest, the scouring force is also the greatest, and the water flow scouring path is close to the baffle.

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