A hybrid water intake system and its control method

Abstract

A hybrid water intake system, comprising a gravity flow water diversion pipeline, a siphon water diversion pipeline, a water collection tank and a water pump; the water collection tank is a closed water tank; one end of the gravity flow water diversion pipeline is connected to a first water intake head, the first water intake head is located between the normal water level and the low water level of the water source, the other end of the gravity flow water diversion pipeline is connected to the water collection tank, and a first control valve is arranged on the gravity flow water diversion pipeline; one end of the siphon water diversion pipeline is connected to a second water intake head, the second water intake head is located below the low water level of the water source, the other end of the siphon water diversion pipeline is connected to the water collection tank, and a second control valve is arranged on the siphon water diversion pipeline; the water inlet of the water pump is connected to one end of a water pump suction pipeline, the other end of the water pump suction pipeline is connected to the water collection tank, the water outlet of the water pump is connected to one end of a water delivery pipeline, and the other end of the water delivery pipeline extends to the water use location. This design not only has a low project cost but also has a low construction difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply and drainage, and particularly to a hybrid water intake system and its control method, which are mainly applicable to reducing the project cost and the construction difficulty of the project. Background Art

[0002] The design and construction of the water supply system are important topics in the water supply and drainage system. Whether the selected water supply system is reasonable or not will have a significant impact on the project cost, operation cost, water supply safety, construction difficulty, and management workload of the entire project. The riverbed water intake structure consists of a water intake head, an intake pipe, an intake chamber, and a pump house. River water enters the intake chamber through the intake holes of the water intake head, along the intake pipe, and is then pumped away by the pump. According to the different forms of the intake pipe, the intake pipe includes a gravity flow pipe, a siphon pipe, etc.

[0003] When using a gravity flow pipe to draw water, river water enters the intake chamber through the gravity flow pipe. Since the gravity flow pipe is submerged in water and the river water flows by gravity, the work is relatively reliable. However, the gravity flow pipe needs to be buried below the guaranteed low water level of the water intake, resulting in a large amount of earthwork excavation, difficult construction, and high construction investment.

[0004] When using a siphon pipe to draw water, river water enters the intake chamber through the siphon pipe and is then pumped away by the pump. The siphon pipe for water intake can be buried above the guaranteed low water level of the water intake. Compared with the gravity flow pipe, the elevation of the buried pipe is increased, so the underwater earthwork volume can be reduced, the construction difficulty is small, the construction period is shortened, and the construction cost is low. However, when the river water level is lower than the top of the siphon pipe, the siphon pipe needs to be evacuated first before water can enter. Vacuum equipment needs to be installed to pump out the air in the siphon pipe, which not only increases the vacuum equipment but also wastes energy. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects and problems of high project cost and high construction difficulty in the prior art, and provide a hybrid water intake system and its control method with low project cost and low construction difficulty.

[0006] To achieve the above purpose, the technical solution of the present invention is: a hybrid water intake system, which includes a gravity flow intake pipeline, a siphon intake pipeline, a water collection tank, and a pump;

[0007] The water collection tank is a closed water tank;

[0008] One end of the gravity flow intake pipeline is connected to the first water intake head, the first water intake head is located between the normal water level and the low water level of the water source, the other end of the gravity flow intake pipeline is connected to the water collection tank, and a first control valve is arranged on the gravity flow intake pipeline;

[0009] One end of the siphon water intake pipeline is connected to the second water intake head, and the second water intake head is located below the low water level of the water source. The other end of the siphon water intake pipeline is connected to the collection tank, and a second control valve is provided on the siphon water intake pipeline;

[0010] The water inlet of the water pump is connected to one end of the water pump suction pipeline, and the other end of the water pump suction pipeline is connected to the collection tank. The water outlet of the water pump is connected to one end of the water delivery pipeline, and the other end of the water delivery pipeline extends to the water usage location.

[0011] The top elevation of the collection tank is higher than the high water level of the water source.

[0012] The lowest water level of the collection tank is the same as the elevation of the highest point of the siphon water intake pipeline.

[0013] The gravity flow water diversion pipeline is horizontally arranged.

[0014] The siphon water intake pipeline includes a water inlet pipe, a first water delivery pipe, a second water delivery pipe, and a water outlet pipe that are connected in sequence. The water inlet pipe is horizontally arranged, and the water inlet of the water inlet pipe is connected to the second water intake head. The second water delivery pipe is horizontally arranged, and the elevation of the second water delivery pipe is higher than the low water level of the water source and lower than the elevation of the gravity flow water diversion pipeline. A second control valve is provided on the second water delivery pipe. The water outlet pipe is located inside the collection tank, is vertically arranged, and the top of the water outlet pipe is connected to the second water delivery pipe. The elevation of the lowest point of the water outlet pipe is lower than the low water level of the water source.

[0015] The water pump suction pipeline includes a horizontal section and a vertical section. The elevation of the horizontal section is higher than the low water level of the water source and lower than the elevation of the highest point of the siphon water intake pipeline. The vertical section is located inside the collection tank, the top of the vertical section is connected to the water inlet of the water pump through the horizontal section, and the bottom of the vertical section is connected with a suction bell mouth. The elevation of the lowest point of the suction bell mouth is lower than the low water level of the water source.

[0016] A grille is provided on the first water intake head; a grille is provided on the second water intake head.

[0017] An inspection manhole is provided on the top of the collection tank.

[0018] The water intake system further includes a water intake pump house, and the collection tank, the first control valve, the second control valve, and the water pump are all located inside the water intake pump house.

[0019] A control method for a hybrid water intake system, the control method includes the following steps:

[0020] When the water level of the water source is higher than the elevation of the gravity flow water intake pipeline, open the No. 1 control valve on the gravity flow water intake pipeline and close the No. 2 control valve on the siphon water intake pipeline. At this time, the water in the water source flows into the gravity flow water intake pipeline through the No. 1 water intake head. The gravity flow water intake pipeline leads the water to the collection water tank. The water in the collection water tank enters the water suction pipeline of the water pump, and then the water pump transports the water in the water suction pipeline of the water pump to the water delivery pipeline. The water delivery pipeline transports the water to the water usage location;

[0021] When the water level of the water source is lower than the elevation of the gravity flow water intake pipeline, close the No. 1 control valve on the gravity flow water intake pipeline and open the No. 2 control valve on the siphon water intake pipeline. At this time, the water in the water source flows into the siphon water intake pipeline through the No. 2 water intake head. The siphon water intake pipeline leads the water to the collection water tank. The water in the collection water tank enters the water suction pipeline of the water pump, and then the water pump transports the water in the water suction pipeline of the water pump to the water delivery pipeline. The water delivery pipeline transports the water to the water usage location.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In the hybrid water intake system and its control method of the present invention, the collection water tank is a closed water tank. One end of the gravity flow water intake pipeline is connected to the No. 1 water intake head, and the No. 1 water intake head is located between the normal water level and the low water level of the water source. The other end of the gravity flow water intake pipeline is connected to the collection water tank. A No. 1 control valve is arranged on the gravity flow water intake pipeline. One end of the siphon water intake pipeline is connected to the No. 2 water intake head, and the No. 2 water intake head is located below the low water level of the water source. The other end of the siphon water intake pipeline is connected to the collection water tank. A No. 2 control valve is arranged on the siphon water intake pipeline. The water inlet of the water pump is connected to the collection water tank through the water suction pipeline of the water pump, and the water outlet of the water pump is connected to the water delivery pipeline; By adopting a high-position gravity flow water intake pipeline and a low-position siphon water intake pipeline, the buried elevation of the water intake pipeline is increased, the construction difficulty of the water intake pipeline is reduced, and the construction period is shortened. At the same time, by adopting a closed collection water tank, there is no need to build a vacuum pipeline and vacuum equipment, and the maintenance and management cost is reduced, thereby reducing the project construction cost. Therefore, the present invention has a low project construction cost and a low project construction difficulty.

[0024] 2. In the hybrid water intake system and its control method of the present invention, the top elevation of the collection water tank is higher than the high water level of the water source. When the water level of the water source drops from the high water level to the low water level, the collection water tank is already filled with water. Close the No. 1 control valve and open the No. 2 control valve. The siphon water intake pipeline is automatically filled with water without a vacuum equipment, reducing the project construction cost; The lowest water level of the collection water tank is the same as the elevation of the highest point of the siphon water intake pipeline, making the water suction pipeline of the water pump always in a self-priming state and capable of automatically starting water supply at any time, improving the water supply reliability; An inspection manhole is arranged at the top of the collection water tank. The collection water tank is usually sealed. When it is necessary to clean the collection water tank, it can be opened for cleaning, making the maintenance simple. Therefore, the present invention has a low project construction cost, high water supply reliability, and simple maintenance.

[0025] 3. In the hybrid water intake system and its control method of the present invention, the gravity flow water diversion pipeline is horizontally arranged; the siphon water intake pipeline includes a water inlet pipe, a first water delivery pipe, a second water delivery pipe, and a water outlet pipe that are connected in sequence. The water inlet pipe is horizontally arranged, the second water delivery pipe is horizontally arranged, the elevation of the second water delivery pipe is higher than the low water level of the water source, and the elevation of the second water delivery pipe is lower than the elevation of the gravity flow water diversion pipeline. The water outlet pipe is located inside the water collection tank and is vertically arranged. The elevation of the lowest point of the water outlet pipe is lower than the low water level of the water source; the water pump suction pipeline includes a horizontal section and a vertical section. The elevation of the horizontal section is higher than the low water level of the water source, and the elevation of the horizontal section is lower than the elevation of the highest point of the siphon water intake pipeline. The vertical section is located inside the water collection tank, and a suction bell mouth is connected to the bottom of the vertical section. The elevation of the lowest point of the suction bell mouth is lower than the low water level of the water source. The above design not only improves the water supply reliability, but also reduces the project construction cost and the construction difficulty of the project. Therefore, the present invention has high water supply reliability, low project construction cost, and low construction difficulty.

[0026] 4. In the hybrid water intake system and its control method of the present invention, a grille is provided on the first water intake head; a grille is provided on the second water intake head. The additional grille is used to intercept floating objects in the water and improve the water intake reliability; the water intake system further includes a water intake pump house. The water collection tank, the first control valve, the second control valve, and the water pump are all located in the water intake pump house. The hybrid water intake system raises the foundation elevation of the water intake pump house, saves the project construction cost of the water intake pump house, reduces the construction difficulty, and shortens the construction period. Therefore, the present invention has high water intake reliability, low project construction cost, low construction difficulty, and short construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the elevation layout diagram of a hybrid water intake system of the present invention.

[0028] Figure 2 is the plan layout diagram of a hybrid water intake system of the present invention.

[0029] In the figure: gravity flow water diversion pipeline 1, siphon water intake pipeline 2, water inlet pipe 21, first water delivery pipe 22, second water delivery pipe 23, water outlet pipe 24, water collection tank 3, water pump 4, first water intake head 5, water source 6, normal water level 61, low water level 62, high water level 63, first control valve 7, second water intake head 8, second control valve 9, water pump suction pipeline 10, horizontal section 101, vertical section 102, water delivery pipeline 11, suction bell mouth 12, water intake pump house 13. DETAILED DESCRIPTION OF THE INVENTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] SeeFigure 1 , Figure 2 , a hybrid water intake system, which includes a gravity diversion pipeline 1, a siphon water intake pipeline 2, a water collection tank 3 and a water pump 4;

[0032] The water collection tank 3 is a closed water tank;

[0033] One end of the gravity diversion pipeline 1 is connected to the first water intake head 5, and the first water intake head 5 is located between the normal water level 61 and the low water level 62 of the water source 6. The other end of the gravity diversion pipeline 1 is connected to the water collection tank 3, and a first control valve 7 is provided on the gravity diversion pipeline 1;

[0034] One end of the siphon water intake pipeline 2 is connected to the second water intake head 8, and the second water intake head 8 is located below the low water level 62 of the water source 6. The other end of the siphon water intake pipeline 2 is connected to the water collection tank 3, and a second control valve 9 is provided on the siphon water intake pipeline 2;

[0035] The water inlet of the water pump 4 is connected to one end of the water pump suction pipeline 10, and the other end of the water pump suction pipeline 10 is connected to the water collection tank 3. The water outlet of the water pump 4 is connected to one end of the water delivery pipeline 11, and the other end of the water delivery pipeline 11 extends to the water use location.

[0036] The top elevation of the water collection tank 3 is higher than the high water level 63 of the water source 6.

[0037] The lowest water level of the water collection tank 3 is the same as the elevation of the highest point of the siphon water intake pipeline 2.

[0038] The gravity diversion pipeline 1 is horizontally arranged.

[0039] The siphon water intake pipeline 2 includes a water inlet pipe 21, a first water delivery pipe 22, a second water delivery pipe 23 and a water outlet pipe 24 that are connected in sequence. The water inlet pipe 21 is horizontally arranged, and the water inlet of the water inlet pipe 21 is connected to the second water intake head 8. The second water delivery pipe 23 is horizontally arranged, and the elevation of the second water delivery pipe 23 is higher than the low water level 62 of the water source 6 and lower than the elevation of the gravity diversion pipeline 1. A second control valve 9 is provided on the second water delivery pipe 23. The water outlet pipe 24 is located inside the water collection tank 3, the water outlet pipe 24 is vertically arranged, the top of the water outlet pipe 24 is connected to the second water delivery pipe 23, and the elevation of the lowest point of the water outlet pipe 24 is lower than the low water level 62 of the water source 6.

[0040] The water pump suction pipeline 10 includes a horizontal section 101 and a vertical section 102. The elevation of the horizontal section 101 is higher than the low water level 62 of the water source 6, and the elevation of the horizontal section 101 is lower than the elevation of the highest point of the siphon suction pipeline 2. The vertical section 102 is located inside the water collection tank 3. The top of the vertical section 102 is connected to the water inlet of the water pump 4 through the horizontal section 101. The bottom of the vertical section 102 is connected with a suction bell mouth 12, and the elevation of the lowest point of the suction bell mouth 12 is lower than the low water level 62 of the water source 6.

[0041] A grille is provided on the first water intake head 5; a grille is provided on the second water intake head 8.

[0042] An inspection manhole is provided on the top of the water collection tank 3.

[0043] The water intake system further includes a water intake pump house 13, and the water collection tank 3, the first control valve 7, the second control valve 9, and the water pump 4 are all located inside the water intake pump house 13.

[0044] A control method for a hybrid water intake system, the control method includes the following steps:

[0045] When the water level of the water source 6 is higher than the elevation of the gravity flow water diversion pipeline 1, open the first control valve 7 on the gravity flow water diversion pipeline 1 and close the second control valve 9 on the siphon suction pipeline 2. At this time, the water in the water source 6 flows into the gravity flow water diversion pipeline 1 through the first water intake head 5. The gravity flow water diversion pipeline 1 diverts the water to the water collection tank 3. The water in the water collection tank 3 enters the water pump suction pipeline 10, and then the water in the water pump suction pipeline 10 is transported to the water delivery pipeline 11 by the water pump 4, and the water delivery pipeline 11 transports the water to the water use location;

[0046] When the water level of the water source 6 is lower than the elevation of the gravity flow water diversion pipeline 1, close the first control valve 7 on the gravity flow water diversion pipeline 1 and open the second control valve 9 on the siphon suction pipeline 2. At this time, the water in the water source 6 flows into the siphon suction pipeline 2 through the second water intake head 8. The siphon suction pipeline 2 diverts the water to the water collection tank 3. The water in the water collection tank 3 enters the water pump suction pipeline 10, and then the water in the water pump suction pipeline 10 is transported to the water delivery pipeline 11 by the water pump 4, and the water delivery pipeline 11 transports the water to the water use location.

[0047] The principle of the present invention is described as follows:

[0048] This design provides a new type of hybrid water intake system, which has practical significance in reducing the project cost of water plants, achieving energy and material conservation, and ensuring the safe and economic operation of water plants. Since the water level in the closed water collection tank is higher than the elevation of the siphon suction pipeline, the installation elevation of the water pump can be increased, the foundation elevation of the water intake pump house can be raised, and the suction pipeline of the water pump can always be in a self-priming water filling state, enabling the water supply to be started at any time with high reliability. In the conventional water intake method, due to the high requirement for water supply safety, the water pump needs to be self-primed to start. The foundation of the water intake pump house is built below the lowest guaranteed water level, resulting in a deeper construction of the water intake pump house, increased civil engineering costs, poor ventilation and moisture-proof conditions, and inconvenient operation and management. This design raises the foundation elevation of the water intake pump house, saves the project cost of the water intake pump house, reduces the construction difficulty, and shortens the construction period. It takes water by gravity at high water levels and by siphon at low water levels, and can obtain water with better quality at different depths according to different water qualities. The water collection tank is a closed water tank. When the water level of the water source drops from the high water level to the low water level, the water collection tank is already filled with water. Close the first control valve and open the second control valve at the same time, and the suction pipeline of the water pump is always in a self-priming water filling state without the need for a vacuum pumping device.

[0049] Embodiment 1:

[0050] See Figure 1 、 Figure 2 , a hybrid water intake system, which includes a gravity diversion pipeline 1, a siphon suction pipeline 2, a water collection tank 3 and a water pump 4; the water collection tank 3 is a closed water tank; one end of the gravity diversion pipeline 1 is connected to the first water intake head 5, and the first water intake head 5 is located between the normal water level 61 and the low water level 62 of the water source 6. The other end of the gravity diversion pipeline 1 is connected to the water collection tank 3, and a first control valve 7 is provided on the gravity diversion pipeline 1; one end of the siphon suction pipeline 2 is connected to the second water intake head 8, and the second water intake head 8 is located below the low water level 62 of the water source 6. The other end of the siphon suction pipeline 2 is connected to the water collection tank 3, and a second control valve 9 is provided on the siphon suction pipeline 2; the water inlet of the water pump 4 is connected to one end of the water pump suction pipeline 10, and the other end of the water pump suction pipeline 10 is connected to the water collection tank 3. The water outlet of the water pump 4 is connected to one end of the water delivery pipeline 11, and the other end of the water delivery pipeline 11 extends to the water use location; a grid is provided on the first water intake head 5; a grid is provided on the second water intake head 8; the water intake system further includes a water intake pump house 13, and the water collection tank 3, the first control valve 7, the second control valve 9, and the water pump 4 are all located in the water intake pump house 13.

[0051] According to the above scheme, a control method for a hybrid water intake system, the control method includes the following steps:

[0052] When the water level of the water source 6 is higher than the elevation of the gravity flow water pipeline 1, open the first control valve 7 on the gravity flow water pipeline 1 and close the second control valve 9 on the siphon water pipeline 2. At this time, the water in the water source 6 flows into the gravity flow water pipeline 1 through the first water intake head 5, and the gravity flow water pipeline 1 leads the water to the water collection tank 3. The water in the water collection tank 3 enters the water pump suction pipeline 10, and then the water in the water pump suction pipeline 10 is transported to the water delivery pipeline 11 by the water pump 4, and the water delivery pipeline 11 transports the water to the water usage location;

[0053] When the water level of the water source 6 is lower than the elevation of the gravity flow water pipeline 1, close the first control valve 7 on the gravity flow water pipeline 1 and open the second control valve 9 on the siphon water pipeline 2. At this time, the water in the water source 6 flows into the siphon water pipeline 2 through the second water intake head 8, and the siphon water pipeline 2 leads the water to the water collection tank 3. The water in the water collection tank 3 enters the water pump suction pipeline 10, and then the water in the water pump suction pipeline 10 is transported to the water delivery pipeline 11 by the water pump 4, and the water delivery pipeline 11 transports the water to the water usage location.

[0054] Embodiment 2:

[0055] The basic content is the same as that of Embodiment 1, the differences are as follows:

[0056] The top elevation of the water collection tank 3 is higher than the high water level 63 of the water source 6; the lowest water level of the water collection tank 3 is the same as the elevation of the highest point of the siphon water pipeline 2; a maintenance manhole is provided at the top of the water collection tank 3.

[0057] Embodiment 3:

[0058] The basic content is the same as that of Embodiment 1, the differences are as follows:

[0059] The gravity flow water supply pipeline 1 is horizontally arranged; the siphon water supply pipeline 2 includes a water inlet pipe 21, a first water delivery pipe 22, a second water delivery pipe 23, and a water outlet pipe 24 that are connected in sequence. The water inlet pipe 21 is horizontally arranged, and the water inlet of the water inlet pipe 21 is connected to the second water intake head 8. The second water delivery pipe 23 is horizontally arranged, and the elevation of the second water delivery pipe 23 is higher than the low water level 62 of the water source 6 and lower than the elevation of the gravity flow water supply pipeline 1. A second control valve 9 is provided on the second water delivery pipe 23. The water outlet pipe 24 is located inside the water collection tank 3, the water outlet pipe 24 is vertically arranged, the top of the water outlet pipe 24 is connected to the second water delivery pipe 23, and the elevation of the lowest point of the water outlet pipe 24 is lower than the low water level 62 of the water source 6; the water pump suction pipeline 10 includes a horizontal section 101 and a vertical section 102. The elevation of the horizontal section 101 is higher than the low water level 62 of the water source 6 and lower than the elevation of the highest point of the siphon water supply pipeline 2. The vertical section 102 is located inside the water collection tank 3. The top of the vertical section 102 is connected to the water inlet of the water pump 4 through the horizontal section 101. The bottom of the vertical section 102 is connected with a suction bell mouth 12, and the elevation of the lowest point of the suction bell mouth 12 is lower than the low water level 62 of the water source 6.

Claims

1. A hybrid water intake system, characterized in that, The water intake system includes a gravity flow water intake pipeline (1), a siphon water intake pipeline (2), a water collection tank (3), and a water pump (4); The water collection tank (3) is a closed water tank; One end of the gravity flow water intake pipeline (1) is connected to the first water intake head (5), and the first water intake head (5) is located between the normal water level (61) and the low water level (62) of the water source (6). The other end of the gravity flow water intake pipeline (1) is connected to the water collection tank (3), and a first control valve (7) is provided on the gravity flow water intake pipeline (1); One end of the siphon water intake pipeline (2) is connected to the second water intake head (8), and the second water intake head (8) is located below the low water level (62) of the water source (6). The other end of the siphon water intake pipeline (2) is connected to the water collection tank (3), and a second control valve (9) is provided on the siphon water intake pipeline (2); The water inlet of the water pump (4) is connected to one end of the water pump suction pipeline (10), and the other end of the water pump suction pipeline (10) is connected to the water collection tank (3). The water outlet of the water pump (4) is connected to one end of the water delivery pipeline (11), and the other end of the water delivery pipeline (11) extends to the water usage location; The top elevation of the water collection tank (3) is higher than the high water level (63) of the water source (6); the lowest water level of the water collection tank (3) is the same as the elevation of the highest point of the siphon water intake pipeline (2); The siphon water intake pipeline (2) includes a water inlet pipe (21), a first water delivery pipe (22), a second water delivery pipe (23), and a water outlet pipe (24) that are connected in sequence. The water inlet pipe (21) is horizontally arranged, and the water inlet of the water inlet pipe (21) is connected to the second water intake head (8). The second water delivery pipe (23) is horizontally arranged, and the elevation of the second water delivery pipe (23) is higher than the low water level (62) of the water source (6), and the elevation of the second water delivery pipe (23) is lower than the elevation of the gravity flow water intake pipeline (1). A second control valve (9) is provided on the second water delivery pipe (23). The water outlet pipe (24) is located inside the water collection tank (3), the water outlet pipe (24) is vertically arranged, the top of the water outlet pipe (24) is connected to the second water delivery pipe (23), and the elevation of the lowest point of the water outlet pipe (24) is lower than the low water level (62) of the water source (6).

2. The hybrid water intake system according to claim 1, characterized in that: The gravity flow water intake pipeline (1) is horizontally arranged.

3. The hybrid water intake system according to claim 1, characterized in that: The water pump suction pipeline (10) includes a horizontal section (101) and a vertical section (102). The elevation of the horizontal section (101) is higher than the low water level (62) of the water source (6), and the elevation of the horizontal section (101) is lower than the elevation of the highest point of the siphon water intake pipeline (2). The vertical section (102) is located inside the water collection tank (3), the top of the vertical section (102) is connected to the water inlet of the water pump (4) through the horizontal section (101), and the bottom of the vertical section (102) is connected with a suction bell mouth (12), and the elevation of the lowest point of the suction bell mouth (12) is lower than the low water level (62) of the water source (6).

4. The hybrid water intake system according to claim 1, characterized in that: A grille is provided on the first water intake head (5); a grille is provided on the second water intake head (8).

5. The hybrid water intake system according to claim 1, characterized in that: An inspection manhole is provided on the top of the water collection tank (3).

6. The hybrid water intake system according to claim 1, characterized in that: The water intake system further includes a water intake pump house (13), and the water collection tank (3), the first control valve (7), the second control valve (9), and the water pump (4) are all located in the water intake pump house (13).

7. A control method for the hybrid water intake system according to claim 1, characterized in that: The control method includes the following steps: When the water level of the water source (6) is higher than the elevation of the gravity flow water intake pipeline (1), open the first control valve (7) on the gravity flow water intake pipeline (1) and close the second control valve (9) on the siphon water intake pipeline (2). At this time, the water in the water source (6) flows into the gravity flow water intake pipeline (1) through the first water intake head (5). The gravity flow water intake pipeline (1) leads the water to the water collection tank (3). The water in the water collection tank (3) enters the water suction pipeline (10) of the water pump, and then the water in the water suction pipeline (10) of the water pump is transported to the water delivery pipeline (11) through the water pump (4), and the water delivery pipeline (11) transports the water to the water usage location; When the water level of the water source (6) is lower than the elevation of the gravity flow water intake pipeline (1), close the first control valve (7) on the gravity flow water intake pipeline (1) and open the second control valve (9) on the siphon water intake pipeline (2). At this time, the water in the water source (6) flows into the siphon water intake pipeline (2) through the second water intake head (8). The siphon water intake pipeline (2) leads the water to the water collection tank (3). The water in the water collection tank (3) enters the water suction pipeline (10) of the water pump, and then the water in the water suction pipeline (10) of the water pump is transported to the water delivery pipeline (11) through the water pump (4), and the water delivery pipeline (11) transports the water to the water usage location.

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