Dike-turning river-exiting pressure pipeline system based on siphon principle

Abstract

The utility model relates to a dike-turning river-exiting pressure pipeline system based on a siphon principle, which comprises a forebay, a pump room, a river-exiting pressure pipe, a vacuum breaking valve, a stilling pool and the like, and the forebay and the pump room are arranged on the backwater side of a flood bank. The river-out pressure pipe is buried under the flood bank ground, the river-out pressure pipe forms an arch with the middle protruding upwards along with the flood bank, and a vacuum breaking valve is arranged at the highest position of the protruding. A siphon condition is formed by arranging the arch-shaped river-out pressure pipe, drainage energy consumption can be greatly saved, air in the pipe is conveniently discharged before drainage, vacuum negative pressure in the pipe is kept during drainage, the pipe is communicated with the atmosphere after drainage is completed by arranging the vacuum breaking valve, water flow backward flowing is avoided, and safety is guaranteed. The stilling pool is arranged on the drainage side of the flood bank and used for dissipating energy of drained water flow. The whole system is simple in structure, small in construction amount and convenient to overhaul.

Description

TECHNICAL FIELD

[0001] The utility model relates to municipal drainage technical field especially relates to a kind of embankment out of river pressure pipeline system based on siphon principle. BACKGROUND

[0002] In conventional drainage out of river pump station, pressure river outlet pipe is needed to be set, and the type of embankment out of river is mostly used. The main problems faced are:

[0003] 1, embankment out of river needs to excavate flood control embankment, and the earthwork quantity is huge, and it brings potential safety hazard to flood control.

[0004] 2, difficult to maintain. The out of river pipe is deeply buried under the flood control embankment, and it is almost impossible to maintain.

[0005] 3, not fully utilizing the water level difference between inside and outside of embankment, and energy is wasted seriously. SUMMARY

[0006] The utility model solves the technical problem of the prior art, and provides an embankment out of river pressure pipeline system based on siphon principle.

[0007] The utility model solves the technical problem and provides an embankment out of river pressure pipeline system based on siphon principle. The utility model is applied to both sides of flood control embankment, and comprises front pool for containing upstream water, pump house, out of river pressure pipe, vacuum breaker and stilling basin. The front pool and the pump house are arranged on the leeward side of the flood control embankment, the pump house is located between the front pool and the flood control embankment, the front pool is communicated with the pump house, the stilling basin is arranged on the windward side of the flood control embankment, and the stilling basin is communicated with downstream receiving water body. The out of river pressure pipe is buried in the surface layer of the ground between the pump house and the stilling basin, and the out of river pressure pipe forms an arch shape with the middle part rising upward along with the flood control embankment. The top of the flood control embankment is provided with the vacuum breaker communicated with the out of river pressure pipe.

[0008] The utility model has the advantages that the embankment out of river pressure pipeline system based on siphon principle of the utility model sets the arch-shaped out of river pressure pipe in the surface layer of the ground between the pump house and the stilling basin, so as to form siphon condition, which can greatly save the energy consumption of drainage. The vacuum breaker is arranged on the top of the flood control embankment, which can discharge air in the pipe before drainage, maintain vacuum negative pressure in the pipe during drainage, and connect with atmosphere after drainage, so as to avoid water backflow, ensure safety, set the stilling basin, which can dissipate the energy of discharged water flow, greatly reduce the impact of water flow on downstream water body, and the whole system has simple structure, small construction quantity and convenient maintenance.

[0009] Based on the above technical scheme, the utility model can be improved as follows:

[0010] Further, the stilling basin comprises a first stilling basin and a second stilling basin, the first stilling basin is arranged between the flood control embankment and the second stilling basin, the out-of-river pressure pipe is communicated with the first stilling basin near the one end of the drainage measurement, the first stilling basin is communicated with the second stilling basin, and the second stilling basin is communicated with a downstream receiving water body.

[0011] The beneficial effect of the above further scheme is that: by arranging the first stilling basin and the second stilling basin, the water flow can be dissipated twice, and the impact of the water flow on the downstream water body can be effectively reduced.

[0012] Further, the first stilling basin has a side wall on the side close to the water inlet higher than the side wall on the other side, and a stilling ridge is arranged between the other side of the first stilling basin and the side close to the water inlet of the second stilling basin.

[0013] The beneficial effect of the above further scheme is that: by arranging the first stilling basin with the side wall on the side close to the water inlet higher than the side wall on the other side, the water flow can be prevented from overflowing from the side wall on the side close to the water inlet of the first stilling basin, and the stilling ridge is arranged to further dissipate the water flow, thereby further reducing the impact of the water flow on the downstream water body.

[0014] Further, the first stilling basin and the stilling ridge are respectively provided with guardrails on both sides along the direction of the water flow.

[0015] The beneficial effect of the above further scheme is that: by arranging the guardrails, the protection effect can be achieved, and the safety of personnel can be ensured.

[0016] Further, the siphon principle-based out-of-river pressure pipe system further comprises a flap valve, the flap valve is arranged at the one end of the out-of-river pressure pipe close to the drainage measurement, and the flap valve is located in the first stilling basin.

[0017] The beneficial effect of the above further scheme is that: by arranging the flap valve, the water flow can be prevented from flowing backward, and the reliability of the entire pipe system can be further improved.

[0018] Further, the second stilling basin is provided with riprap at the connection with the downstream receiving water body.

[0019] The beneficial effect of the above further scheme is that: by arranging the riprap, the water flow in the second stilling basin can be buffered and protected when being discharged to the downstream water body, and the impact on the bottom of the downstream water body can be avoided.

[0020] Further, the siphon principle-based out-of-river pressure pipe system further comprises a plurality of piers, and the plurality of piers are respectively arranged in the surface layer of the ground between the pump house and the stilling basin at the bending and connecting positions corresponding to the out-of-river pressure pipe.

[0021] The beneficial effect of the above-mentioned further solution is that by setting up the pier, the pressure pipe at the river outlet can be protected, reducing the impact on the pressure pipe at the river outlet when the water flow turns within the pressure pipe. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a pressure pipeline system for overflowing the dike and flowing out of the river based on the siphon principle, according to an embodiment of the present invention.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Flood control dike, 2. Forebay, 3. Pump house, 4. Vacuum breaker valve, 5. Primary stilling basin, 6. Secondary stilling basin, 7. Outlet pressure pipe, 8. Stilling sill, 9. Flap gate, 10. Rockfill, 11. Guardrail, 12. Borehole. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] like Figure 1 As shown, a siphon-based pressure pipeline system for overflowing a flood control dike is applied to both sides of a flood control dike 1. It includes a forebay 2 for receiving upstream water, a pump house 3, an overflow pressure pipe 7, a vacuum breaker valve 4, and a stilling basin. The forebay 2 and pump house 3 are located on the downstream side of the flood control dike 1, with the pump house 3 situated between the forebay 2 and the flood control dike 1. The forebay 2 is connected to the pump house 3. The stilling basin is located on the upstream side of the flood control dike 1 and is connected to the downstream receiving water body. The overflow pressure pipe 7 is buried in the surface layer of the ground between the pump house 3 and the stilling basin, and the overflow pressure pipe 7 forms an arch shape with the flood control dike 1, rising upwards in the middle. The vacuum breaker valve 4, connected to the overflow pressure pipe 7, is installed on the top of the flood control dike 1.

[0027] This utility model discloses a siphon-based pressure pipeline system for overflowing the dike and flowing into the river. By setting an arched pressure pipe 7 for flowing into the river within the surface layer of the ground between the pump house 3 and the stilling basin, it is easy to form siphon conditions, which can greatly save drainage energy consumption. By setting a vacuum breaker valve 4 on the top of the flood control dike 1, it is convenient to remove air from the pipe before drainage, maintain a vacuum negative pressure in the pipe during drainage, and connect to the atmosphere after drainage to prevent backflow and ensure safety. By setting up a stilling basin, the discharged water flow can be dissipated, which greatly reduces the impact of the water flow on the downstream water body. The system has a simple structure, requires little construction, and is easy to maintain.

[0028] In one or more embodiments of the utility model, the stilling basin includes a first stilling basin 5 and a second stilling basin 6, the first stilling basin 5 is arranged between the flood control embankment 1 and the second stilling basin 6, the out-of-river pressure pipe 7 is communicated with the first stilling basin 5 near the drainage survey end, the first stilling basin 5 is communicated with the second stilling basin 6, and the second stilling basin 6 is communicated with the downstream receiving water body. By arranging the first stilling basin 5 and the second stilling basin 6, the water flow can be dissipated twice, and the impact of the water flow on the downstream water body can be effectively reduced.

[0029] In one or more embodiments of the utility model, the first stilling basin 5 is higher on one side near the water inlet side than on the other side, and a stilling ridge 8 is arranged between the other side of the first stilling basin 5 and one side near the water inlet side of the second stilling basin 6. By making the first stilling basin 5 higher on one side near the water inlet side than on the other side, the water flow can be prevented from overflowing from the side wall on one side near the water inlet side of the first stilling basin 5, and the stilling ridge 8 is arranged to further dissipate the water flow, further reducing the impact of the water flow on the downstream water body.

[0030] In one or more embodiments of the utility model, the first stilling basin 5 and the stilling ridge 8 are respectively provided with guardrails 11 on both sides along the water flow direction. By arranging the guardrails 11, the protection effect can be achieved to ensure the safety of personnel.

[0031] Optionally, in one or more embodiments of the utility model, the out-of-river pressure pipe system based on the siphon principle further comprises a flap valve 9, the flap valve 9 is arranged near the drainage survey end of the out-of-river pressure pipe 7, and the flap valve 9 is located in the first stilling basin 5. By arranging the flap valve 9, the water flow can be prevented from backflowing, and the reliability of the entire pipe system can be further improved.

[0032] In one or more embodiments of the utility model, the second stilling basin 6 is provided with riprap 10 at the connection with the downstream receiving water body. By arranging the riprap 10, the riprap 10 can play a buffering and protection role when the water flow in the second stilling basin 6 is discharged to the downstream water body, and the impact on the bottom of the downstream water body can be avoided.

[0033] In one or more embodiments of the utility model, the out-of-river pressure pipe system based on the siphon principle further comprises a plurality of piers 12, and the plurality of piers 12 are respectively arranged in the surface layer of the ground between the pump house 3 and the stilling basin at the corresponding bending and connecting positions of the out-of-river pressure pipe 7. By arranging the piers 12, the piers 12 can play a protection role on the out-of-river pressure pipe 7, and the impact of the water flow on the out-of-river pressure pipe 7 when the water flow flows in the out-of-river pressure pipe 7 can be reduced.

[0034] The siphon principle based embankment breaking and river discharging pressure pipeline system, when the pump house 3 unit is opened, the vacuum breaking valve 4 is opened, the vacuum breaking valve 4 can rapidly discharge a large amount of accumulated air in the river discharging pressure pipe 7, and the working efficiency of the pump house 3 unit and the river discharging pressure pipe 7 is improved; when the pump house 3 unit normally operates, vacuum is formed and the negative pressure at the hump of the river discharging pressure pipe 7 is kept, and siphon is formed; when the pump house 3 unit stops operating, the vacuum breaking valve 4 is automatically opened, air is sucked in, the siphon is broken, the river water is prevented from flowing back, and safety is ensured.

[0035] The siphon principle based embankment breaking and river discharging pressure pipeline system, the river discharging pressure pipe 7 is upwardly raised along the flood control embankment land 1, siphon condition is formed, submerged outflow is adopted for water outlet, and more than 30% of power consumption can be saved through estimation, the river discharging pressure pipe 7 is buried in the surface layer of the ground between the pump house 3 and the stilling basin, earthwork quantity is small, and maintenance is convenient, and the siphon principle based embankment breaking and river discharging pressure pipeline system has been applied in part of the drainage river discharging pump stations.

[0036] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement, improvement and the like made in the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A pressure pipeline system based on the siphon principle for the outflow of a river over a dike (1) on both sides, characterized in that: The application relates to a flood control dam (1) comprising a front pool (2) for containing upstream incoming water, a pump house (3), an out-of-river pressure pipe (7), a vacuum breaking valve (4) and a stilling basin, wherein the front pool (2) and the pump house (3) are arranged on the land side of the flood control dam (1), the pump house (3) is located between the front pool (2) and the flood control dam (1), the front pool (2) is communicated with the pump house (3), the stilling basin is arranged on the water side of the flood control dam (1) and communicated with a downstream receiving water body, the out-of-river pressure pipe (7) is buried in the surface layer of the ground between the pump house (3) and the stilling basin, and the out-of-river pressure pipe (7) is arched upwards in the middle of the flood control dam (1), and the top of the flood control dam (1) is provided with the vacuum breaking valve (4) communicated with the out-of-river pressure pipe (7).

2. The siphonic, over-the-dike pressure pipeline system of claim 1, wherein: The stilling basin comprises a first stilling basin (5) and a second stilling basin (6), the first stilling basin (5) is arranged between the flood control dam (1) and the second stilling basin (6), the out-of-river pressure pipe (7) is communicated with the first stilling basin (5) near the drainage measuring end, the first stilling basin (5) is communicated with the second stilling basin (6), and the second stilling basin (6) is communicated with the downstream receiving water body.

3. The siphonic over-the-dike pressure pipeline system of claim 2, wherein: The first stilling basin (5) is higher on the side wall near the water inlet side than on the other side, and a stilling ridge (8) is arranged between the other side of the first stilling basin (5) and the side near the water inlet side of the second stilling basin (6).

4. The siphonic, spillway, pressure pipeline system according to claim 2, wherein: Guardrails (11) are arranged on both sides of the first stilling basin (5) and the stilling ridge (8) along the water flow direction.

5. The siphonic, reverse-graded, outlet-die pressure pipe system of claim 2, wherein: A flap valve (9) is further arranged on the out-of-river pressure pipe (7) near the drainage measuring end and located in the first stilling basin (5).

6. The siphonic, spillway, pressure pipeline system according to Claim 2, wherein: The second stilling basin (6) is provided with riprap (10) at the connection with the downstream receiving water body.

7. The siphonic, over-the-dike pressure pipeline system according to any of claims 1-6, characterized in that: A plurality of piers (12) are further arranged in the surface layer of the ground between the pump house (3) and the stilling basin and corresponding to the bending and connecting positions of the out-of-river pressure pipe (7).

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