Small and medium-sized reservoir inverted siphon water delivery system and water delivery method

Abstract

The application discloses a small and medium-sized reservoir inverted siphon water delivery system and a water delivery method. The system comprises a water delivery pipe arranged along a dam body, a support pier for supporting the water delivery pipe, a rhombic functional cavity, an integrated control cabinet and an energy dissipation mechanism. The water delivery pipe comprises a water delivery pipe section, an intermediate pipe section and a water outlet pipe section. The intermediate pipe section is arranged on the dam top, connected with the rhombic functional cavity and used for guiding water into a high position and storing the water to store energy by forming negative pressure. The water outlet pipe section is connected with the energy dissipation mechanism. The energy dissipation mechanism comprises an energy dissipation well cover arranged at the tail end of the water outlet pipe and an energy dissipation ridge arranged at the rear end of the energy dissipation cover. The integrated control cabinet is used for controlling the rhombic functional cavity. The system is simple, convenient to construct and install, reduces the repair and construction cost of the water delivery pipe in the process of danger elimination and reinforcement of the small and medium-sized reservoir, can deal with the drainage problem in the case of extreme power failure, and provides a low-cost and sustainable solution for the disease and danger caused by aging, damage and leakage of the water delivery pipe.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering, specifically to a small and medium-sized reservoir inverted siphon water conveyance system and water conveyance method. Background Technology

[0002] As time went by, the water transmission pipes of the small and medium-sized reservoirs built in the early days of the People's Republic of China all had varying degrees of blockage and leakage. In the process of reservoir reinforcement and renovation, the repair and construction of water transmission pipes were often characterized by high costs, high technical requirements, and poor repair results.

[0003] The construction, expansion and renovation of old reservoirs are ongoing, and their appearance has been greatly improved. The flood control and water storage capacity of the reservoirs have been significantly improved. The work of reinforcing and regulating the downstream river channels has also been promoted, which has given them a certain flood control capacity.

[0004] However, some reservoirs are located in relatively remote areas and face power supply problems, which makes it difficult to carry out water conveyance and drainage operations normally. In addition, the high cost of renovation is also a problem they face.

[0005] Therefore, there is an urgent need for a simple, low-cost system and method for water conveyance and drainage in reservoirs that can be applied to sudden power outages. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a small-to-medium-sized reservoir inverted siphon water conveyance system and method. This system lays water conveyance pipes on the dam surface and utilizes the inverted siphon principle to pump water from the reservoir. Water conveyance pipes are installed through a concrete-covered ditch on the dam crest to avoid disrupting traffic. The entire structure is simple, easy to install, and reduces the cost of repairing and constructing water conveyance pipes. The process also considers drainage issues in extreme power outage scenarios, providing a low-cost, sustainable solution to the hazards caused by aging, damage, and leakage of water conveyance pipes. This effectively extends the overall service life of the reservoir and saves on overall operating costs.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] In a first aspect, the present invention provides a small and medium-sized reservoir inverted siphon water conveyance system, including a water conveyance pipe erected along the dam body, a support pier for supporting the water conveyance pipe, a diamond-shaped functional cavity, an integrated control cabinet, and an energy dissipation mechanism;

[0009] The water supply pipe includes a water supply section, an intermediate section, and an outlet section;

[0010] The intermediate pipe section is placed on the top of the dam and connected to the diamond-shaped functional cavity. By creating negative pressure, water is introduced into a high position and stored for energy storage.

[0011] The water outlet pipe section is connected to the energy dissipation mechanism; the energy dissipation mechanism includes an energy dissipation well cover located at the end of the water outlet pipe and an energy dissipation sill located at the rear end of the energy dissipation cover;

[0012] The integrated control cabinet is used to control the diamond-shaped functional cavity.

[0013] Furthermore, a dirt-blocking filter screen is provided at the head end of the water supply pipe.

[0014] Furthermore, the rhomboid functional cavity includes an L-shaped base, a rhomboid functional cavity body, and a high-pressure vacuum pump;

[0015] The rhomboid functional cavity and the high-pressure vacuum pump are set on an L-shaped base;

[0016] The diamond-shaped functional cavity is set on the middle pipe section and is inclined vertically toward the water-facing end;

[0017] The high-pressure vacuum pump is connected to one side of the diamond-shaped functional cavity through a pipe equipped with a solenoid valve;

[0018] The solenoid valves and high-pressure vacuum pumps are controlled by an integrated control cabinet.

[0019] Furthermore, the top surface of the rhomboid functional cavity is provided with a sealed water inlet, which includes a sealing ring, a sealing cover, and a safety pressure rod; the sealing ring is located at the lower end of the sealing cover, and the safety pressure rod is connected to the sealing cover.

[0020] Furthermore, the safety pressure rod is hinged to the diamond-shaped functional cavity for opening and closing the sealing cover, and a limiting device is provided to ensure its safe closing.

[0021] Furthermore, the rhomboid functional cavity is rhomboid in the vertical direction, connects to the middle pipe section, and the connection position is rounded.

[0022] Furthermore, the efficiency mechanism includes a gravity energy dissipation cover and an energy dissipation sill; the gravity energy dissipation cover dissipates energy by forming a grid structure through internally reinforced ribs; the energy dissipation sill dissipates energy by blocking the water flow direction.

[0023] In a second aspect, the present invention provides a method for water conveyance using the inverted siphon water conveyance system of small and medium-sized reservoirs described in the first aspect, characterized in that:

[0024] Includes the following steps:

[0025] (1) Close the energy dissipation cover to ensure airtightness.

[0026] (2) Ensure the diamond-shaped functional cavity is sealed;

[0027] (3) The diamond-shaped functional cavity is controlled by the integrated control cabinet to generate negative pressure, and water from the reservoir is drawn to the highest point of the water transmission pipe. The water flows along the water transmission pipe section to fill the entire pipeline.

[0028] (4) Drainage is divided into power supply mode and no power supply mode:

[0029] Power supply mode:

[0030] When water fills the functional cavity of the rhombus, the negative pressure stops being generated, the energy dissipation cover opens, and drainage is carried out using the siphon effect;

[0031] In the mode without power supply:

[0032] Keep the energy dissipation cover closed, introduce an external water source into the diamond-shaped functional cavity, and let the water flow along the water conveyance pipe in the middle of the dam crest section to the outlet section until it is full;

[0033] When water is poured to the highest point of the water supply pipe, ensure the sealing of the diamond-shaped functional cavity;

[0034] Open the gravity energy dissipation cover and use the siphon effect to drain water;

[0035] (5) After drainage is completed and the reservoir reaches the safe target water level, the seal of the rhomboid functional cavity is released to stop drainage.

[0036] Furthermore, the method for generating negative pressure in the rhomboid functional cavity is to use a vacuum pump to generate negative pressure.

[0037] Furthermore, the method for releasing the seal of the rhomboid functional cavity is to seal and release it by setting an openable and closable top cover on the rhomboid functional cavity.

[0038] The beneficial effects of this invention are as follows:

[0039] (1) The system provided by this invention is simple and easy to install, which reduces the cost of repairing and building new water supply pipes during the reinforcement of small and medium-sized reservoirs. It can effectively deal with drainage problems in extreme power outage situations, and provides a low-cost and sustainable solution for the dangers and hazards caused by aging, damage and leakage of water supply pipes. It effectively extends the overall service life of the reservoir and saves the overall operation and maintenance costs.

[0040] (2) The system provided by the present invention utilizes the inverted siphon effect, which is different from the traditional inverted siphon principle. The high-pressure vacuum pump is set on the side of the rhomboid functional cavity, which does not directly contact the water flow impact and corrosion, greatly reducing the failure rate of the equipment, while improving the drainage smoothness of the water supply pipeline.

[0041] (3) The rhomboid functional cavity of the present invention is inclined at the top towards the direction of incoming water and has rounded corners at the welding point with the water supply pipe, which greatly reduces the impact of water flow on the rhomboid functional cavity and ensures the stability of water flow in the water supply pipe. A sealed water inlet is provided on the top surface of the rhomboid functional cavity, and an electromagnetic valve connected to a high-pressure vacuum pump is provided on the side.

[0042] (4) The sealed water inlet of the system described in this invention can be used as an external water source inlet when there is no power supply, and it can also be used as an air inlet, so that the siphon effect can achieve the opening and closing function. Its structure is simple, ingeniously designed, easy to install and manufacture, and low in cost.

[0043] (4) The system described in this invention is laid on the surface of the dam, and the water conveyance pipe is installed through the dam top via a covered ditch, avoiding disruption to traffic on the dam top. Its overall structure is simple and reliable, and construction and installation are convenient and easy to operate. It significantly reduces the cost of repairing and constructing new water conveyance pipes during the reinforcement and renovation of small and medium-sized reservoirs, and also reduces the operation and maintenance costs of the water conveyance pipes. Unlike ordinary inverted siphons, its innovative design considers drainage in extreme power outage situations. It breaks through the problems of difficult and costly repair of aging and damaged water conveyance pipes laid in the traditional dam body, and greatly reduces the hazards caused by aging and damaged water conveyance pipes to the reservoir, effectively extending the service life of the reservoir and saving overall maintenance costs. Attached Figure Description

[0044] Figure 1 This is a cross-sectional view of an inverted siphon water supply pipe;

[0045] Figure 2 This is a top view of the inverted siphon water supply pipe.

[0046] Figure 3 This is a detailed drawing of the high-pressure vacuum pump.

[0047] Figure 4 This is a detailed drawing of the water outlet of the water supply pipe;

[0048] Figure 5 A schematic diagram showing the direction of the water-facing side at the high-pressure vacuum pump;

[0049] Figure 6 A schematic diagram showing the direction of the backwater surface at the high-pressure vacuum pump;

[0050] Figure 7 Schematic diagram of gravity energy dissipation cover;

[0051] In the diagram: 100 - dam body, 101 - dam crest;

[0052] 200 - Water supply pipe, 201 - Water supply pipe section, 202 - Intermediate pipe section, 203 - Water outlet pipe section;

[0053] 210-Rhombus-shaped functional cavity, 211-L-shaped base, 212-Rhombus-shaped functional cavity body, 213-High-pressure vacuum pump; 220-Sealed water inlet, 221-Sealing ring, 222-Sealing cover, 223-Safety lever; 224-Solenoid valve;

[0054] 230 - Integrated Control Cabinet

[0055] 240-Support pier, 241-Pillar pier;

[0056] 250-Pollution barrier screen;

[0057] 260-Crossover cover;

[0058] 300-Energy dissipation mechanism, 310-Energy dissipation cover, 311-Damping device, 312-Rubber sealing ring, 313-Safety buckle, 314-Reinforced edging, 315-Trapezoidal reinforced ridge, 320-Energy dissipation sill. Detailed Implementation

[0059] The present invention will be further described below with reference to specific embodiments, but the content of the present invention is not limited thereto.

[0060] Example 1

[0061] like Figure 1 , 2 As shown, a small to medium-sized reservoir inverted siphon water conveyance system includes a water conveyance pipe 200 erected along the dam body 100, a support pier 240 for supporting the water conveyance pipe, a rhomboid functional cavity 210, an integrated control cabinet 230, and an energy dissipation mechanism 300.

[0062] The water supply pipe 200 includes a water supply pipe section 201, an intermediate pipe section 202, and a water outlet pipe section 203;

[0063] The intermediate pipe 202 section is placed on the top of the dam 101 and connected to the diamond-shaped functional cavity 210. By forming negative pressure, water is introduced into the high position and stored for energy storage.

[0064] The water outlet pipe section 203 is connected to the energy dissipation mechanism 300; the energy dissipation mechanism 300 includes an energy dissipation cover 310 disposed at the end of the water outlet pipe and an energy dissipation sill 320 disposed at the rear end of the energy dissipation cover 310;

[0065] The integrated control cabinet 230 is used to control the rhomboid functional cavity 210.

[0066] As a specific embodiment, a dirt-blocking filter screen 250 is provided at the head end of the water supply pipe.

[0067] As a specific embodiment, the rhomboid functional cavity 210 includes an L-shaped base 211, a rhomboid functional cavity body 212, and a high-pressure vacuum pump 213;

[0068] The rhomboid functional cavity 212 and the high-pressure vacuum pump 213 are mounted on the L-shaped base 211;

[0069] The rhomboid functional cavity 212 is installed on the intermediate pipe section 202 and is inclined vertically toward the water-facing end;

[0070] The high-pressure vacuum pump 213 is connected to one side of the rhomboid functional cavity 212 through a pipe equipped with a solenoid valve;

[0071] Solenoid valve 224 and high-pressure vacuum pump 213 are controlled by integrated control cabinet 230.

[0072] As an improved embodiment, the top surface of the rhomboid functional cavity 212 is provided with a sealed water inlet 220, the sealed water inlet 220 including a sealing ring 221, a sealing cover 222 and a safety pressure rod 223; the sealing ring 221 is disposed at the lower end of the sealing cover 222, and the safety pressure rod 223 is connected to the sealing cover.

[0073] In a further improvement, the safety pressure rod 223 is hinged to the rhomboid functional cavity 212 for opening and closing the sealing cover 222, and a limiting device is provided to ensure its safe closing.

[0074] As an improved embodiment, the rhomboid functional cavity 212 is rhomboid in the vertical direction, communicates with the intermediate pipe section 202, and the connection position is rounded.

[0075] As a specific embodiment, the energy dissipation mechanism 300 includes an energy dissipation cover 310 and an energy dissipation sill 320; the gravity energy dissipation cover 310 dissipates energy by forming a grid structure through the internal trapezoidal reinforcing ribs 315; the energy dissipation sill 320 dissipates energy by blocking the water flow direction.

[0076] As a specific embodiment, the water conveying pipe 200 is welded from seamless steel pipes. The slope section is set according to the slope of the dam, and the dam crest section gradually slopes downward from the water-facing side to the back water-facing side to ensure that the water flows smoothly into the back water-facing water conveying pipe after passing through the highest point of the water conveying pipe, and to ensure that there is enough water to generate the inverted siphon effect smoothly.

[0077] As a specific embodiment, the dirt-blocking filter screen 250 is a barrel-shaped filter screen made of steel bars welded at equal intervals. It is welded to the water inlet of the water supply pipe to prevent larger objects from entering the water supply pipe and to prevent blockage of the water supply pipe.

[0078] As a specific embodiment, the gravity energy dissipation cover 310 is an elliptical metal cover plate with a sloping surface. When closed, it can better fit the outlet using gravity to achieve a better seal. It can also use gravity to pressurize the water head during drainage, reducing the discharge energy and impact on the energy dissipation sill 320, thus extending the service life of the hydraulic facilities and reducing dam slope toe damage.

[0079] As a specific embodiment, the trapezoidal reinforcing rib 315 is a trapezoidal rib arranged in a "well" shape on the surface of the cover plate. Its function is to ensure that the gravity energy dissipation cover does not dent or deform during the vacuum extraction process of the high-pressure vacuum pump.

[0080] As an improved embodiment, the energy dissipation cover 310 is also provided with a rubber sealing ring 312, a safety buckle 313 for limiting position, and a reinforcing edge 314.

[0081] As a specific embodiment, the reinforcing edging 314 is a reinforcing strip around the edge of the gravity energy dissipation cover, which is used to ensure that the gravity energy dissipation cover does not break at the edge under the action of the safety buckle when it is closed and sealed.

[0082] As a specific embodiment, the energy dissipation cover 310 also includes a damping device 311. The damping device 311 is disposed at the upper edge opening hinge of the gravity energy dissipation cover 310, and mainly serves to prevent the gravity sealing cover from being quickly pushed open and flipped up during drainage, thus preventing damage to the water supply pipe and ensuring the personal safety of the operators.

[0083] As a specific embodiment, the safety buckle 313 is pre-embedded on the pier 241 and is made of high-strength alloy. Its main function is to close the gravity energy dissipation cover 310 and prevent it from being opened by water pressure during the water storage period of the water supply pipe.

[0084] As a specific embodiment, the energy dissipation sill 320 is a hydraulic facility that serves to dissipate drainage energy.

[0085] As a specific embodiment, the integrated control cabinet 230 is made of stainless steel and is designed to be rainproof. It houses a high-pressure vacuum pump, a power supply interface, and a switch control system.

[0086] As a specific embodiment, the road cover 260 is precast reinforced concrete and mainly serves to connect the road trench on the top of the dam to ensure the normal passage function of the dam top.

[0087] As a specific embodiment, the pier 241, the support pier 240, and the L-shaped foundation 211 are made of concrete and serve to stabilize the water supply pipe and the integrated control cabinet.

[0088] Example 2

[0089] A method for water conveyance using the inverted siphon water conveyance system of a small to medium-sized reservoir as described in Example 1 includes the following steps:

[0090] (1) Close the energy dissipation cover 310 to ensure a tight seal;

[0091] (2) Ensure the diamond-shaped functional cavity 210 is sealed;

[0092] (3) The diamond-shaped functional cavity 210 is controlled by the integrated control cabinet 230 to generate negative pressure, and water from the reservoir is drawn to the highest point of the water transmission pipe. The water flows along the water transmission pipe section to fill the entire pipeline.

[0093] (4) Drainage is divided into power supply mode and no power supply mode:

[0094] Power supply mode:

[0095] When water fills the rhomboid functional cavity 210, the negative pressure is stopped, the energy dissipation cover 310 is opened, and drainage is carried out by using the siphon effect;

[0096] In the mode without power supply:

[0097] Keep the energy dissipation cover 310 closed, introduce an external water source into the diamond-shaped functional cavity 210, and let the water flow along the middle water conveyance pipe section 202 of the dam crest section to the outlet pipe section until it is full;

[0098] When water is poured to the highest point of the water supply pipe, ensure the sealing of the rhomboid functional cavity 210;

[0099] Open the gravity energy dissipation cover 310 to drain water using the siphon effect;

[0100] (5) After drainage is completed and the reservoir reaches the safe target water level, the seal of the rhomboid functional cavity 210 is released to stop drainage.

[0101] As a specific embodiment, the method for generating negative pressure in the rhomboid functional cavity 210 is to use a vacuum pump to generate negative pressure.

[0102] As a specific embodiment, the method for releasing the seal of the rhomboid functional cavity 210 is to seal and release it by providing an openable and closable top cover on the rhomboid functional cavity.

[0103] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the invention.

Claims

1. A small to medium-sized reservoir inverted siphon water conveyance system, characterized in that: This includes water pipelines laid along the dam body, supports for the water pipelines, diamond-shaped functional cavities, integrated control cabinets, and energy dissipation mechanisms; The water supply pipe includes a water supply section, an intermediate section, and an outlet section; The intermediate pipe section is placed on the top of the dam and connected to the diamond-shaped functional cavity. It introduces water to a high level and stores it for energy storage by forming a negative pressure. The diamond-shaped functional cavity includes an L-shaped foundation, a diamond-shaped functional cavity body, and a high-pressure vacuum pump. The rhomboid functional cavity and the high-pressure vacuum pump are set on an L-shaped base; The diamond-shaped functional cavity is set on the middle pipe section and is inclined vertically toward the water-facing end; The high-pressure vacuum pump is connected to one side of the diamond-shaped functional cavity through a pipe equipped with a solenoid valve; The solenoid valve and high-pressure vacuum pump are controlled by an integrated control cabinet; the top surface of the rhomboid functional cavity is provided with a sealed water inlet; the sealed water inlet can be used as an external water source inlet when there is no power supply, or as an air inlet, so that the siphon effect can achieve the opening and closing function; The outlet pipe section is connected to the energy dissipation mechanism; the energy dissipation mechanism includes an energy dissipation well cover at the end of the outlet pipe and an energy dissipation sill at the rear end of the energy dissipation cover; the gravity energy dissipation cover dissipates energy by forming a grid structure through internal reinforcing ribs; the energy dissipation sill dissipates energy by blocking the water flow direction; The integrated control cabinet is used to control the diamond-shaped functional cavity.

2. The inverted siphon water conveyance system for small and medium-sized reservoirs according to claim 1, characterized in that: A dirt-blocking filter screen is installed at the head end of the water supply pipe.

3. The inverted siphon water conveyance system for small and medium-sized reservoirs according to claim 1, characterized in that: The sealed water inlet includes a sealing ring, a sealing cover, and a safety pressure rod; the sealing ring is located at the lower end of the sealing cover, and the safety pressure rod is connected to the sealing cover.

4. The inverted siphon water conveyance system for small and medium-sized reservoirs according to claim 3, characterized in that: The safety lever is hinged to the diamond-shaped functional cavity for opening and closing the sealing cover, and a limiting device is provided to ensure its safe closing.

5. The inverted siphon water conveyance system for small and medium-sized reservoirs according to claim 1, characterized in that: The rhomboid functional cavity is rhomboid in the vertical direction, connects to the middle pipe section, and the connection position is rounded.

6. A method for water conveyance using the inverted siphon water conveyance system of a small or medium-sized reservoir as described in any one of claims 1-5, characterized in that: Includes the following steps: (1) Close the energy dissipation cover to ensure airtightness; (2) Ensure the diamond-shaped functional cavity is sealed; (3) The diamond-shaped functional cavity is controlled by the integrated control cabinet to generate negative pressure, and water from the reservoir is drawn to the highest point of the water transmission pipe. The water flows along the water transmission pipe section to fill the entire pipeline. (4) Drainage is divided into power supply mode and no power supply mode: Power supply mode: When water fills the functional cavity of the rhombus, the negative pressure stops being generated, the energy dissipation cover opens, and drainage is carried out using the siphon effect; In the mode without power supply: Keep the energy dissipation cover closed, introduce an external water source into the diamond-shaped functional cavity, and let the water flow along the water conveyance pipe in the middle of the dam crest section to the outlet section until it is full; When water is poured to the highest point of the water supply pipe, ensure the sealing of the diamond-shaped functional cavity; Open the gravity energy dissipation cover and use the siphon effect to drain water; (5) After drainage is completed and the reservoir reaches the safe target water level, the seal of the rhomboid functional cavity is released to stop drainage.

7. The method for water conveyance using the inverted siphon water conveyance system of small and medium-sized reservoirs according to claim 6, characterized in that: The method for generating negative pressure in the rhomboid functional cavity is to use a vacuum pump.

8. The method for water conveyance using the inverted siphon water conveyance system of small and medium-sized reservoirs according to claim 6, characterized in that: The method to release the seal of the rhomboid functional cavity is to seal and release it by setting an openable and closable top cover on the rhomboid functional cavity.

Images