CN109853454B - Siphon type estuary underground reservoir water changing device and operation method - Google Patents

Siphon type estuary underground reservoir water changing device and operation method Download PDF

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Publication number
CN109853454B
CN109853454B CN201811586686.1A CN201811586686A CN109853454B CN 109853454 B CN109853454 B CN 109853454B CN 201811586686 A CN201811586686 A CN 201811586686A CN 109853454 B CN109853454 B CN 109853454B
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China
Prior art keywords
water
siphon
pipe
underground reservoir
estuary
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CN201811586686.1A
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CN109853454A (en
Inventor
王宗志
王银堂
程亮
刘克琳
陈学群
金菊良
王小红
汪哲荪
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Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
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Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
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Priority to CN201811586686.1A priority Critical patent/CN109853454B/en
Publication of CN109853454A publication Critical patent/CN109853454A/en
Priority to GB1910510.5A priority patent/GB2576826B/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B1/00Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E02B1/003Mechanically induced gas or liquid streams in seas, lakes or water-courses for forming weirs or breakwaters; making or keeping water surfaces free from ice, aerating or circulating water, e.g. screens of air-bubbles against sludge formation or salt water entry, pump-assisted water circulation
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/02Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
    • E02B3/023Removing sediments
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B7/00Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B7/00Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/16Fixed weirs; Superstructures or flash-boards therefor
    • E02B7/18Siphon weirs
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B8/00Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/06Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Sewage (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The invention discloses a siphon type river mouth underground reservoir water changing device which comprises a water filtering pipe, a water filtering tank and a siphon pipe row, wherein the water filtering pipe is communicated with an inlet of the water filtering tank, the siphon pipe row comprises a base, a plurality of arched siphons are arranged in the base, water inlets of the siphons are communicated with the water filtering tank, the siphons comprise water inlet sections, camel peak sections, water curtain sections and water outlet sections, water curtain sections are provided with water draining holes along the circumference of pipe walls, water through rings are arranged on the outer walls of the water curtain sections, ventilation pipes are arranged on the camel peak sections of the siphons, electromagnetic valves are arranged on the ventilation pipes, a water pump is arranged at the top of the base, a water inlet of the water pump is communicated with the water filtering tank, a water outlet of the water pump is communicated with the water through a pressure water pipe, and the water through rings are electrically connected with a control cabinet. The invention can monitor the water quality and the water level of the estuary underground reservoir in real time in all weather, can automatically control the operation of the water changing and water quality monitoring device, flexibly changes the water of the estuary underground reservoir to be discharged into the sea, and protects ecology, environment and water resources.

Description

Siphon type estuary underground reservoir water changing device and operation method
Technical Field
The invention relates to a water quality control device, in particular to a siphon type estuary underground reservoir water changing device and an operation method.
Background
At present, some river water retaining structures are built on the riverbed of the river sea entrance, water interception walls are arranged in the banks at the two sides of the water retaining structures, the water retaining structures and the water interception walls separate the river from the sea, seawater is prevented from flowing backward, and meanwhile water between the riverbed and two sides of underground sand is stored to form an underground reservoir for development and utilization, but water between the underground sand cannot flow to form dead water, and ecology and environment are destroyed.
Disclosure of Invention
The invention aims to: the invention aims to provide a siphon type estuary underground reservoir water changing device and an operation method thereof, which solve the problems that water between underground gravels cannot flow into dead water and the ecology and the environment are damaged.
The technical scheme is as follows: the invention discloses a siphon type river mouth underground reservoir water changing device which comprises a water filtering pipe, a water filtering tank and a siphon pipe row, wherein the water filtering pipe is communicated with an inlet of the water filtering tank, the siphon pipe row comprises a base, a plurality of arched siphons are arranged in the base, a water inlet of each siphon is communicated with the water filtering tank, each siphon comprises a water inlet section, a camel peak section, a water curtain section and a water outlet section, the water curtain section is provided with a water draining hole along the circumference of a pipe wall, the outer wall of the water curtain section is provided with a water passing ring, the camel peak section of each siphon is provided with a ventilation pipeline, an electromagnetic valve is arranged on the ventilation pipeline, the top of the base is provided with a water pump, a water inlet of the water pump is communicated with the water filtering tank, and a water outlet of the water pump is communicated with the water passing ring through a pressure water pipe, and the water pump and the electromagnetic valve are electrically connected with a control cabinet.
In order to convey the groundwater far from the siphon tube row, the filter tube is paved in the gravel layer of the underground reservoir, and the periphery of the filter tube is paved with a reverse filter layer.
For stabilizing the structure, the water level of the water filtering tank is consistent by uniform water quantity, and sediment is convenient to clean, a plurality of vertical partitions are arranged in the water filtering tank at equal intervals, and water inlets are formed in the vertical partitions.
The underground water filtering device is favorable for filtering underground water in a large area, has large bearing capacity and structural stress, and the top of the water filtering tank is provided with a water permeable plate.
Prevent the sea water from flowing backward, the siphon outlet is provided with a flap valve.
The photovoltaic control system is convenient to supply power to each control device, an operation room is arranged on the top surface of the base, and a photovoltaic panel is arranged on the roof of the operation room.
For carrying the quality of water signal, be provided with the quality of water sensor in the filter tank, the quality of water sensor passes through the cable and is connected with the switch board.
For transmitting the water level signal, the both sides of base all are provided with water level sensor, and water level sensor passes through the cable and is connected with the switch board.
The operation method of the siphon type estuary underground reservoir water changing device comprises the following steps:
(1) Connecting cables of a photovoltaic plate, a water pump, an electromagnetic valve, a water level sensor and a water quality sensor with a control cabinet, and turning on a power supply of the control cabinet;
(2) When water in the estuary underground reservoir is not required to be replaced in the water storage period, the electromagnetic valve is only opened, so that air enters the siphon pipe from the air pipe, vacuum is not formed in the hump section, the flap valve of the water outlet of the siphon pipe tightly closes the water outlet of the siphon pipe under the action of dead weight and large seawater pressure, and seawater cannot flow into the estuary underground reservoir;
(3) When the water level of the river is higher than the water storage level of the water retaining building and the water level of the sea, the electromagnetic valves of the ventilation pipelines on all the siphons are closed, so that vacuum is generated in the hump section of the siphon, the siphon is formed under the action of atmospheric pressure, and the river water automatically flows to the sea through the underground gravel gap, the plurality of water filtering pipes, the water filtering tank and the siphon;
(4) When the water level of the river is lower than the hump top elevation in the siphon and higher than the sea water level, the electromagnetic valve on the ventilation pipeline is closed firstly, then the water pump is started, so that the water is ejected from all water outlets through the pressure water pipe and the water through ring, a closed water curtain is formed in the water curtain section, the vacuum is formed in the hump section, the water in the river mouth underground reservoir is discharged into the sea through the siphon under the siphon action, and the water pump is closed after siphon water discharge is generated in the siphon until the water level of the river is flush with the sea water level or lower than the sea water level, and the siphon no longer discharges water. When the water level of the river rises to be higher than the water level of the sea or the water level of the sea is lower than the water level of the river, the electromagnetic valve is repeatedly closed, the water pump is started, a closed water curtain is generated in the water curtain section, vacuum is formed in the hump section again, and the siphon pipe continuously discharges water.
The beneficial effects are that: the invention can monitor the water quality and the water level of the estuary underground reservoir in real time in all weather, can automatically control the operation of the water changing and water quality monitoring device, flexibly changes the water of the estuary underground reservoir to be discharged into the sea, and protects ecology, environment and water resources. The invention adopts the water-facing surface of the water filtering tank as the sloping plate, and the micro-arch water permeable plate is arranged on the sloping plate, which is favorable for filtering underground water in a large area, has large bearing capacity and structural stress, adopts the cross section of the siphon base as a saddle shape, and the base rides on soil bases at two sides of the water interception wall, is favorable for reducing dead weight, structural stress and ballasting the siphon, adopts a circle of water outlet holes on the pipe wall of the water curtain section of the siphon, and has a circular arc chute at the lower edge opening of each water outlet hole, is favorable for forming a closed water curtain when water is discharged from the water outlet holes, and is favorable for forming vacuum in the camel peak section and obtaining drainage when the water head difference is smaller. The intelligent water quality monitoring system has the advantages of reliable operation, simple structure, large leakage flow, automatic control, easy construction, simple management and intelligent water quality monitoring.
Drawings
FIG. 1 is a schematic side cross-sectional view of the present invention;
FIG. 2 is a schematic top plan layout of the riverbed installation of the present invention;
FIG. 3 is a schematic side sectional view of the water curtain segment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-3, a water retaining structure 13 and the water changing and water quality monitoring device 15 are arranged on the river bed 5 at the sea entrance of the river 4, a water interception wall 14 is arranged in each of the water retaining structures 13 and the water changing and water quality monitoring device 15 on the river bank 6 at the two sides of the river 4, and the water retaining structures 13, the water changing and water quality monitoring device 15 and the water interception wall 14 are connected with each other to separate the river water from the big sea water. Because of the blocking of the water retaining building 13, the water changing and quality monitoring device 15 and the water interception wall 14, a large amount of underground water 7 is reserved between the upstream sand 8 of the water retaining building to form a estuary underground reservoir 11. The water retaining structure 13 discharges the water of the river blocked into the sea 1, the water changing and water quality monitoring device 15 discharges the groundwater 7 of the estuary groundwater reservoir 11 into the sea 1, and the water of the sea 1 is not allowed to flow into the river 4 and the estuary groundwater reservoir 11. The tops of the water interception walls 14 are higher than the water storage level 12 of the water retaining building 13, and the bottoms of the water interception walls are positioned on the river bed 5 and the impermeable layers 9 under the two sides. The water changing and quality monitoring device 15 is sequentially connected with a plurality of water filtering pipes 16, a water filtering tank 18, a siphon pipe row 25 and a stilling pool 17 from upstream to downstream. A plurality of water filter tubes 16 are horizontally and radially laid in the underground gravel 8 layer from the water filter tank 18, and a reverse filter layer 24 is laid on the periphery of the water filter tubes 16. The water filtering tank 18 is a trapezoid tank, the tank opening of the water filtering tank 18 faces downstream, a plurality of vertical partition plates 22 with equal intervals are arranged in the water filtering tank 18, gate-shaped water through holes 23 are formed in the vertical partition plates 22, a row of holes communicated with the water filtering pipe 16 are formed in the rear plate 19 of the water filtering tank 18, and a reverse filtering layer 24 is paved on the inclined plate 20 of the water filtering tank 18. The top surface of the base 26 of the siphon tube row 25 is flush with the top surface of the water retaining building 13, and the bottom surface of the base 26 is positioned on the underground rock base or the impervious layer 9. The siphon tube row 25 is internally provided with a row of siphon tubes 28 with equal interval, the siphon tubes 28 are in a triangular shape, the siphon tubes 28 are sequentially connected with a water inlet section 29, a hump section 30, a water curtain section 32 and a water outlet section 31 from upstream to downstream, the water inlet section 29, the hump section 30, the water curtain section 32 and the water outlet section 31 are all round tubes, the top of the hump peak in the siphon tubes 28 is level with the water storage level 12 of the water retaining building 13, and the top of the siphon tube 28 is provided with a ventilation pipeline 27 and an electromagnetic valve 41. The water inlets of the siphon pipes 28 are bell mouths, and the water inlets of the siphon pipes 28 are positioned at the lower part of the upstream side of the base 26 and between every two vertical partition plates 22 in the filter tank 18. The water outlet of each siphon tube 28 is positioned at the downstream side of the base 26, the water outlets of the siphon tubes 28 are all round pipe openings, the water outlets are all provided with the flap valves 36, and the flap valves 36 are all inclined downstream. On the top surface of the base 26 is an operating room 43, and on the roof of this operating room 43 is mounted a row of photovoltaic panels 44. A water pump 39 is installed in the operation room 43, a water inlet pipe 37 of the water pump 39 penetrates into the water filtering tank 18 along the upstream surface of the base 26, a filter 38 is arranged on the water inlet pipe 37, and a water outlet pipe of the water pump 39 is communicated with the pressure water pipe 35 in the base 26. Water level sensors 42 are installed on both the upstream and downstream sides of the base 26 of the siphon array 25 to monitor the river water level, ground water level and sea water level. Water quality sensors 40 are installed on the plate walls of the vertical partition plates 22 in the water filtering tank 18 to monitor the water quality change of the estuary underground reservoir 11. Circular water permeable plates 21 are arranged on the inclined plate 20 of the water filtering tank 18, the water permeable plates 21 are micro arch plates in a 'construction' shape, and the water permeable plates 21 are outwards protruded on the inclined plate 20. The cross section of the base 26 is in a saddle shape, the base 26 is ridden on the soil base 10 at two sides of the water interception wall 14, and the bottom surface of the middle part of the base 26 is connected with the top surface of the water interception wall 14. The wall of the water curtain section 32 of the siphon pipe 28 is provided with a circle of water outlet holes 33 which are distributed at equal intervals, the lower edge openings of the water outlet holes 33 are provided with circular arc discharge grooves, and the water outlet holes 33 are gathered into a closed water curtain after water is discharged, so that vacuum is formed in the hump section 30. A water passing ring 34 is arranged on the outer wall of the surrounding water curtain section 32, a joint connected with the pressure water pipe 35 is arranged on the water passing ring 34, and a channel communicated with each water outlet 33 is arranged in the water passing ring 34.
The invention adopts the inclined plate 20 as the upstream surface of the water filtering tank 18, and the micro-arch water permeable plate 21 is arranged on the inclined plate 20, which is favorable for filtering underground water in a large area, has large bearing capacity and stress on the structure, adopts the saddle-shaped cross section of the base 26 of the siphon 28, and the base 26 rides on the soil base 10 at two sides of the water interception wall 14, which is favorable for reducing dead weight, stress on the structure and fixing the siphon 28, adopts a circle of water outlet holes arranged on the wall of the water curtain section 32 of the siphon 28, and the lower edge opening of each water outlet hole is provided with an arc chute, which is favorable for collecting a closed water curtain when the water outlet holes are discharged, so that vacuum is formed in the hump section 30, the water continuously discharged in the water outlet holes forms pipe flow in the water outlet section 31 under the action of gravity, and the water level in the water inlet section 29 rises under the action of atmospheric pressure until the hump top is formed, so that the siphon 28 obtains discharging flow when the water head difference is smaller.
When the invention operates, the cables of the photovoltaic plate 44, the water pump 39, the electromagnetic valve 41, the flap valve opening and closing sensor, the water level sensor 42 and the water quality sensor 40 are connected with the control cabinet, and the power supply of the control cabinet is turned on to prepare for changing water for ensuring the water quality of the river mouth underground reservoir 11.
When the water in the estuary underground reservoir 11 is not needed to be replaced in the water storage period, as the hump top of the siphon pipe 28 is the height of the water storage level 12 of the water retaining building 13, the electromagnetic valve 41 is only opened, so that air enters the siphon pipe 28 from the air pipe 27, no vacuum is formed in the hump section 30, and no matter the water level 2 of the sea changes, the water in the river 4 can not flow into the sea 1. Because the flap valves 36 are arranged at the water outlets of all the siphons 28, the flap valves 36 tightly close the water outlets of the siphons 28 under the action of dead weight and 1 water pressure of the sea, and the sea water cannot flow into the estuary underground reservoir 11. When the water level of the river is higher than the water storage level 12 of the water retaining building 13 and the sea water level 2, the river water automatically flows to the sea 1 through the gaps of the underground sand 8, the plurality of water filtering pipes 16, the water filtering tank 18, the row of siphon pipes 28, the clap door 36 and the stilling pool 17. In order to increase the drainage flow of the siphon pipe 28, the electromagnetic valves 41 of the ventilation pipes 27 on all the siphon pipes 28 are closed, vacuum is generated in the hump section 30 of the siphon pipe 28, the siphon is formed under the action of atmospheric pressure, and the water in the estuary underground reservoir 11 is drained into the sea 1 with larger drainage flow, so that the water in the estuary underground reservoir 11 is replaced. When the water level of the river is lower than the hump top elevation in the siphon 28 and is higher than the sea water level 2, and the water in the estuary underground reservoir 11 needs to be replaced, the electromagnetic valve 41 on the ventilation pipeline 27 is firstly closed, then the water pump 39 is started, the water is ejected from all the water outlets 33 through the pressure water pipe 35 and the water through ring 34, the water curtain section 32 is integrated into a closed water curtain, so that vacuum is formed in the hump section 30, the water in the estuary underground reservoir 11 is discharged into the sea 1 through the siphon 28 under the siphon action, and the water pump 39 is closed after siphon water discharge is generated in the siphon 28 until the water level of the river is level with the sea water level 2 or lower than the sea water level 2, and the siphon 28 is no longer discharged. When the water level of the river rises above the sea level 2 or the water level of the sea level 2 falls below the water level of the river, the electromagnetic valve 41 is repeatedly closed, the water pump 39 is started, a closed water curtain is generated in the water curtain section 32, vacuum is formed in the hump section 30, and the siphon pipe 28 continuously discharges water.
The specific operation process of the invention is as follows:
(1) Siphon 28 siphons and drains when the river water level is higher than the water storage level 12 of the water retaining building 13 and the sea water level 2: the water level sensor 42 installed on the upper and downstream sides of the base 26 transmits signals of the river water level or the underground water level and the big sea water level 2 to the control cabinet, the control cabinet controls and closes the electromagnetic valve 41 to prevent air from entering the hump section 30 of the siphon pipe 28 from the ventilation pipeline 27, vacuum is generated in the hump section 30, the siphon is formed under the action of atmospheric pressure, and the water of the estuary underground reservoir 11 is discharged into the sea 1 through the water inlet section 29, the hump section 30, the water curtain section 32, the water outlet section 31 and the flap valve 36 of the siphon pipe 28 at a larger flow rate so as to achieve the purpose of replacing the water of the estuary underground reservoir 11.
(2) Siphon 28 siphons off when the river level is below siphon 28 hump top is above sea level 2: the water level sensor 42 installed on the upstream and downstream sides of the base 26 transmits signals of the river water level or the underground water level and the large sea water level 2 to the control cabinet, and the water quality sensor 40 installed in the water filtering tank 18 transmits signals of the water quality of the estuary underground reservoir 11 to the control cabinet, which controls the electromagnetic valve 41 and the water pump 39 according to a set operation scheme and program. When the water quality sensor 40 outputs a signal that the water quality of the estuary underground reservoir 11 does not meet the standard requirement, the control cabinet controls the electromagnetic valve 41 to be closed, the water pump 39 is started, the water of the water outlet pipe of the water pump 39 is ejected from the water outlet hole 33 through the pressure water pipe 35 and the water curtain section 32 to form a closed water curtain, vacuum is generated in the hump section 30, siphoning is formed under the action of atmospheric pressure, and the water of the estuary underground reservoir 11 is discharged into the sea 1 through the water inlet section 29, the hump section 30, the water curtain section 32, the water outlet section 31 and the flap valve 36 of the siphon 28; when the water quality sensor 40 outputs a signal that the water quality of the estuary underground reservoir 11 meets the standard requirement, the control cabinet controls the electromagnetic valve 41 to be opened, so that air is input into the hump section 30 of the siphon pipe 28 from the air pipe 27, the hump section 30 is not vacuumized, the siphon pipe 28 cannot siphon, and the water of the estuary underground reservoir 11 is not discharged into the sea 1.

Claims (5)

1. The utility model provides a siphon type estuary underground reservoir water changing device which is characterized by, includes drainage pipe (16), drainage tank (18) and siphon bank of tubes (25), drainage pipe (16) with drainage tank (18) entry intercommunication, siphon bank of tubes (25) include base (26), be provided with a plurality of arch siphon (28) in base (26), siphon (28) water inlet with drainage tank (18) intercommunication, siphon (28) include water inlet section (29), hump section (30), water curtain section (32) and play water section (31), water curtain section (32) set up wash port (33) and outer wall along the pipe wall circumference are provided with water ring (34), siphon hump section (30) are provided with vent pipe (27), be provided with solenoid valve (41) on vent pipe (27), the top of base (26) is provided with water pump (39), the water inlet and the drainage tank (18) intercommunication of water pump (39), the delivery port of water pump (39) are through pressure ring (35) with water ring and vent (34), wherein, all be connected with solenoid valve (41) and solenoid valve (41);
the cross section of the base (26) is saddle-shaped, the base (26) is ridden on soil bases (10) at two sides of the water interception wall (14), and the bottom surface of the middle part of the base (26) is connected with the top surface of the water interception wall (14);
the water filtering pipe (16) is paved in a gravel layer of the underground reservoir, and the periphery of the water filtering pipe (16) is paved with a reverse filtering layer (24); a plurality of vertical partition plates (22) are arranged in the water filtering tank (18) at equal intervals, and water inlets (23) are formed in the vertical partition plates (22); the top of the water filtering tank (18) is provided with a water permeable plate (21); the upstream surface of the water filtering tank (18) is an inclined plate (20), and a micro-arch water permeable plate (21) is arranged on the inclined plate (20); the outlet of the siphon tube (28) is provided with a flap valve (36).
2. The siphon-type estuary underground reservoir water changing device according to claim 1, wherein the top surface of the base (26) is provided with an operation room (43), and a photovoltaic panel (44) is installed on the roof of the operation room (43).
3. The siphon-type estuary underground reservoir water changing device according to claim 1, wherein a water quality sensor (40) is arranged in the water filtering tank (18), and the water quality sensor (40) is connected with the control cabinet through a cable.
4. The siphon-type estuary underground reservoir water changing device according to claim 1, wherein water level sensors (42) are arranged on both sides of the base (26), and the water level sensors (42) are connected with the control cabinet through cables.
5. The method for operating a water-changing device for a siphon-type estuary underground reservoir according to claim 1, comprising the steps of:
(1) Connecting cables of a photovoltaic plate, a water pump, an electromagnetic valve, a water level sensor and a water quality sensor with a control cabinet, and turning on a power supply of the control cabinet;
(2) When water in the estuary underground reservoir is not required to be replaced in the water storage period, the electromagnetic valve is opened, so that air enters the siphon pipe from the air pipe, vacuum is not formed in the hump section, the flap valve of the water outlet of the siphon pipe tightly closes the water outlet of the siphon pipe under the action of dead weight and large seawater pressure, and seawater cannot flow into the estuary underground reservoir;
(3) When the water level of the river is higher than the water storage level of the water retaining building and the water level of the sea, the electromagnetic valves of the ventilation pipelines on all the siphons are closed, so that vacuum is generated in the hump section of the siphon, the siphon is formed under the action of atmospheric pressure, and the river water automatically flows to the sea through the underground gravel gap, the plurality of water filtering pipes, the water filtering tank and the siphon;
(4) When the water level of river is lower than the hump top height in siphon pipe and higher than sea water level, when the water of river mouth underground reservoir needs to be changed, firstly closing electromagnetic valve on the ventilating pipeline, then starting water pump, making water be ejected from all water outlet holes by means of pressure water pipe and water-passing ring, and forming vacuum in the hump section, under the action of siphon, the water in the river mouth underground reservoir can be discharged into sea by means of siphon pipe, after siphon water discharge is produced in the siphon pipe, the water pump is closed, until the water level of river is flush with sea water level or lower than sea water level, and when the water level of river is raised and higher than sea water level or lower than river water level, repeatedly closing electromagnetic valve, starting water pump, producing closed water curtain in the water curtain section, and forming vacuum in the hump section, then continuously discharging water.
CN201811586686.1A 2018-12-25 2018-12-25 Siphon type estuary underground reservoir water changing device and operation method Active CN109853454B (en)

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Application Number Priority Date Filing Date Title
CN201811586686.1A CN109853454B (en) 2018-12-25 2018-12-25 Siphon type estuary underground reservoir water changing device and operation method
GB1910510.5A GB2576826B (en) 2018-12-25 2019-07-23 A siphonic underground reservoir water changing device and method

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Application Number Priority Date Filing Date Title
CN201811586686.1A CN109853454B (en) 2018-12-25 2018-12-25 Siphon type estuary underground reservoir water changing device and operation method

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CN109853454B true CN109853454B (en) 2024-03-19

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