Water lifting system and water lifting method

Abstract

The invention provides a water lifting system and a water lifting method. The water lifting system comprises a retaining dam, a power pipeline, a natural energy water pump, a first pipeline, a first control valve, a second control valve, a water supply object and a controller. And one end of the power pipeline is connected with the retaining dam. The natural energy water pump is connected with the other end of the power pipeline. One end of the first pipeline and the power pipeline are connected to a connection point. The first control valve is arranged on the first pipeline. The second control valve is arranged on the power pipeline and located between the connecting point and the natural energy water pump. The water supply object is connected with the other end of the first pipeline. The first control valve is located between the connection point and the water supply object. The controller is electrically connected with the first control valve and the second control valve, and when the height of the water supply object is lower than the lowest water level of the retaining dam, the controller controls the first control valve to be opened and controls the second control valve to be closed. The problem that a high-lift water pump in an existing water lifting device is large in operation loss is solved.

Description

Technical Field

[0001] The present application relates to the technical field of water conservancy and hydropower, and in particular to a water pumping system and a water pumping method. Background Art

[0002] Unsafe drinking water not only brings inconvenience to production, but also seriously affects people's health and life safety. In many mountainous areas, the mountains are high and the water is low. During the farming season, a large amount of arable land is seriously short of water. Most of the water for irrigation is carried on the back of people, which has high production costs and low production efficiency.

[0003] In order to solve the above problems, Chinese patent CN118375581A discloses a natural energy full hydraulic water lifting method and device based on pure water hydraulic transmission technology, which uses a drainage pipe to lead the water in the water dam into a high-lift water pump. The high-lift water pump then sends the water to the destination reservoir, and then uses the destination reservoir to supply water to the mountainous area. When the destination reservoir is lower than the water level in the water dam, the water lifting device still needs to use a high-lift water pump to transport water, which makes the operation loss of the high-lift water pump relatively large. Therefore, the high-lift water pump in the existing water lifting device has the problem of large operation loss. Summary of the invention

[0004] The purpose of the present application is to provide a water pumping system for reducing the operating loss of a natural energy water pump, comprising a water retaining dam, a power pipeline, a natural energy water pump, a first pipeline, a first control valve, a second control valve, a water supply object and a controller. One end of the power pipeline is connected to the water retaining dam. The natural energy water pump is connected to the other end of the power pipeline. One end of the first pipeline is connected to the power pipeline at a connection point. The first control valve is arranged on the first pipeline. The second control valve is arranged on the power pipeline, and the second control valve is located between the connection point and the natural energy water pump. The water supply object is connected to the other end of the first pipeline, and the first control valve is located between the connection point and the water supply object. The controller is electrically connected to the first control valve and the second control valve. When the height of the water supply object is lower than the lowest water level of the water retaining dam, the controller controls the first control valve to open and controls the second control valve to close.

[0005] Optionally, the water pumping system also includes a high-level water tank and a water pumping pipe, and both ends of the water pumping pipe are respectively connected to the high-level water tank and the natural energy water pump, and the height of the high-level water tank is higher than the highest water level of the dam.

[0006] Optionally, the water pumping system also includes a second pipeline and a third control valve, wherein both ends of the second pipeline are respectively connected to the high-level water tank and the water supply object, and the third control valve is arranged in the second pipeline. The third control valve is located between the high-level water tank and the water supply object, and the third control valve is electrically connected to the controller. When the height of the water supply object is higher than the highest water level of the water retaining dam, the controller controls the second control valve to open and the third control valve to open.

[0007] Optionally, the water pumping system further comprises a liquid level meter, which is disposed in the high-level water tank. The liquid level meter is electrically connected to the controller, and when the liquid level meter detects that the high-level water tank is filled with water, the controller controls the second control valve to close.

[0008] Optionally, the inner diameter of the second pipe is larger than the inner diameter of the water pumping pipe.

[0009] Optionally, the first control valve is located on the first pipeline close to the connection point, and the second control valve is located on the power pipeline close to the connection point.

[0010] Optionally, the water retaining dam is a rolling dam.

[0011] The present application also provides a water extraction method, using the water extraction system, comprising:

[0012] The water intercepted by the water dam enters the power pipeline and natural water pump; and

[0013] When the height of the water supply object is lower than the lowest water level of the water retaining dam, the first control valve is controlled to open.

[0014] Optionally, the water extraction method further comprises:

[0015] The water in the lifting pipe is passed to the high-level water tank; and

[0016] When the height of the water supply object is higher than the highest water level of the water retaining dam, the second control valve and the third control valve are controlled to open.

[0017] Optionally, the water extraction method further includes controlling a third control valve to close when the height of the water supply object is lower than the lowest water level of the dam, wherein the third control valve is located on the second pipeline near the high-level water tank.

[0018] The beneficial effects of the present application are as follows: by setting a water retaining dam, a power pipeline, a natural energy water pump, a first pipeline, a first control valve, a second control valve, a water supply object and a controller. One end of the power pipeline is connected to the water retaining dam. The natural energy water pump is connected to the other end of the power pipeline. One end of the first pipeline is connected to the power pipeline at a connection point. The first control valve is arranged on the first pipeline. The second control valve is arranged on the power pipeline, and the second control valve is located between the connection point and the natural energy water pump. The water supply object is connected to the other end of the first pipeline, and the first control valve is located between the connection point and the water supply object. The controller is electrically connected to the first control valve and the second control valve, and when the height of the water supply object is lower than the lowest water level of the water retaining dam, the controller controls the first control valve to open and controls the second control valve to close.

[0019] Because when the height of the water supply object is lower than the lowest water level of the dam, the controller controls the first control valve to open and the second control valve to close. At this time, the water in the power pipeline can enter the water supply object through the first pipeline instead of entering the natural energy water pump. At this time, the natural energy water pump is not needed to supply water to the water supply object, and the natural energy water pump does not need to operate, reducing the operating loss of the natural energy water pump.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the present application is described in detail below with reference to the preferred embodiments of the present application and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a water pumping system in the first embodiment of the present application;

[0022] Figure 2 is a block diagram of a controller, a first control valve, a second control valve, a third control valve and a liquid level meter in the first embodiment of the present application;

[0023] Figure 3 This is a flow chart of the water extraction method in the second embodiment of the present application.

[0024] Wherein, the reference numerals are:

[0025] 100 dams

[0026] 101 Power Pipeline

[0027] 102 Natural Energy Water Pump

[0028] 103 First Pipeline

[0029] 104 first control valve

[0030] 105 Second control valve

[0031] 106 Water supply objects

[0032] 107 Controller

[0033] 108 High Level Pool

[0034] 109 Water Pipeline

[0035] 110 Second Pipeline

[0036] 111 Third control valve

[0037] 112 Liquid level gauge

[0038] P1 connection point

[0039] S1-S4: Steps of water extraction method DETAILED DESCRIPTION

[0040] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0041] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments. In order to enable those skilled in the art to better understand the present application scheme, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] First embodiment

[0045] Please also refer to Figure 1 and Figure 2 In this embodiment, a water lifting system is provided, including a water retaining dam 100, a power pipeline 101, a natural energy water pump 102, a first pipeline 103, a first control valve 104, a second control valve 105, a water supply object 106 and a controller 107. One end of the power pipeline 101 is connected to the water retaining dam 100. The natural energy water pump 102 is connected to the other end of the power pipeline 101. One end of the first pipeline 103 is connected to the power pipeline 101 at a connection point P1. The first control valve 104 is arranged on the first pipeline 103. The second control valve 105 is arranged on the power pipeline 101, and the second control valve 105 is located between the connection point P1 and the natural energy water pump 102. The water supply object 106 is connected to the other end of the first pipeline 103, and the first control valve 104 is located between the connection point P1 and the water supply object 106. The controller 107 is electrically connected to the first control valve 104 and the second control valve 105. When the height of the water supply object 106 is lower than the lowest water level of the dam 100, the controller 107 controls the first control valve 104 to open and controls the second control valve 105 to close.

[0046] like Figure 1 As shown, the end of the power pipeline 101 at a higher height can be buried in the water retaining dam 100 when the water retaining dam 100 is cast. The end of the power pipeline 101 at a lower height can be screwed to the natural energy water pump 102 through a flange. The end of the first pipeline 103 at a lower height can be connected to the power pipeline 101 at the connection point P1 by screwing. The end of the first pipeline 103 at a higher height can be fixed to the water supply object 106 by screwing or welding. For example, the end of the first pipeline 103 at a higher height can be connected to the water supply network of the water supply object 106 by screwing.

[0047] Please also refer to Figure 1 and Figure 2, because when the height of the water supply object 106 is lower than the lowest water level of the water dam 100, the controller 107 controls the first control valve 104 to open and controls the second control valve 105 to close, at this time, the water in the power pipeline 101 can enter the water supply object 106 through the first pipeline 103 and will not enter the natural energy water pump 102. At this time, the natural energy water pump 102 is not needed to supply water to the water supply object 106, and then the natural energy water pump 102 does not need to operate, reducing the operating loss of the natural energy water pump 102. The height of the water supply object 106 is higher than the height of the natural energy water pump 102.

[0048] Please also refer to Figure 1 and Figure 2 The natural energy water pump 102 can be a pure water hydraulic driven water pump, that is, the natural energy water pump 102 can be driven by water flow. When there is no water flowing to the natural energy water pump 102 in the power pipeline 101, the natural energy water pump 102 will not operate. The first control valve 104, the second control valve 105 and the third control valve 111 can be an electric butterfly valve, an electric gate valve or an electric ball valve. The first control valve 104, the second control valve 105 and the third control valve 111 and the controller 107 can be electrically connected through wires.

[0049] like Figure 1 As shown, when installing the valve (the valves below include the first control valve 104, the second control valve 105 and the third control valve 111), the flanges or socket (slot) short pipes at both ends of the valve can be connected with bolts on the ground and then hoisted underground to connect with the corresponding pipeline. The first control valve 104 can control the on-off of the first pipeline 103. The second control valve 105 can control the on-off of the section from the connection point P1 to the natural energy water pump 102 on the power pipeline 101. The second control valve 105 is located between the connection point P1 and the natural energy water pump 102. When the second control valve 105 shuts off the power pipeline 101, water can still flow into the first pipeline 103. That is, with this arrangement, the second control valve 105 will not interfere with the water supply of the first pipeline 103. The third control valve 111 can control the on-off of the second pipeline 110.

[0050] Please also refer to Figure 1 and Figure 2 After the valve is installed, the flange connection on the valve should be flat and tight, the bolt lengths connecting the valve and the pipeline should be consistent, and the nuts should be on the same side. After the bolts are tightened, 1 to 3 threads should extend out of the nuts. The valve support should be stable and firm, and have full contact with the valve. The controller 107 can be a single-chip microcomputer or a PLC (Programmable Logic Controller). The water lifting pipeline 109 can be a seamless steel pipe. The power pipeline 101, the first pipeline 103 and the second pipeline 110 can be spiral steel pipes.

[0051] like Figure 1As shown, the water retaining dam 100 and the high-level water pool 108 can be cast with reinforced concrete, and the inner walls of the water retaining dam 100 and the high-level water pool 108 can be treated with 1:2 cement mortar plastering. The height of the water retaining dam 100 is not less than 1 meter. The lowest water level of the water retaining dam 100 and the highest water level of the water retaining dam 100 can be determined when the water retaining dam 100 is designed, and can also be measured with a water level meter. The lowest water level of the water retaining dam 100 can be flush with the bottom of the water retaining dam 100. The highest water level of the water retaining dam 100 can be flush with the top of the water retaining dam 100. The water retaining dam 100 can be a gravity dam or a gate dam, or it can be a rolling dam in the subsequent content of the embodiment. The water retaining dam 100 can be set in the river channel.

[0052] Please also refer to Figure 1 and Figure 2 , the height of the water supply object 106 is the elevation of the water supply object 106. The height of the water supply object 106 can be measured in advance by a total station, or can be measured in real time by an altitude meter. When the altitude meter is used for measurement, the altitude meter can be electrically connected to the controller 107. When the controller 107 receives a signal that the height of the water supply object 106 measured by the altitude meter is lower than the lowest water level of the water retaining dam 100, the controller 107 can control the first control valve 104 to open and the second control valve 105 to close. When the controller 107 receives a signal that the height of the water supply object 106 measured by the altitude meter is higher than the highest water level of the water retaining dam 100, the controller 107 can control the second control valve 105 to open and the third control valve 111 to open.

[0053] Please also refer to Figure 1 and Figure 2 , the altitude meter and the controller 107 can be electrically connected by wires. The water supply object 106 can be a water supply network of an irrigation area or a township. When the height of the water supply object 106 is lower than the lowest water level of the water retaining dam 100, the water supply object 106 is called a low-altitude water supply object. When the height of the water supply object 106 is higher than the highest height of the water retaining dam 100, the water supply object 106 is called a high-altitude water supply object. The height of the high-altitude water supply object is lower than the height of the high-level water tank 108.

[0054] like Figure 1 As shown, the power pipeline 101, the first pipeline 103, the water-lifting pipeline 109 and the second pipeline 110 (the power pipeline 101, the first pipeline 103, the water-lifting pipeline 109 and the second pipeline 110 are collectively referred to as pipelines in the following pipeline construction content) can be buried in the trench. When excavating the trench, the starting point and the end point should each leave original soil trenches more than three times the length of the trench depth, and no excavation shall be done to serve as backing soil for the pressure test piers. A 0.1m soil layer should be left above the bottom of the trench and not excavated for the time being, and will be manually cleaned to the designed elevation before the pipeline is installed. The residual soil that needs to be piled on site should be at least 0.8m away from the upper edge of the trench, and the pile height shall not exceed 1.5m.

[0055] After the trench is dug, the pipeline is laid in the trench. Before laying the pipeline, check whether the pipeline has damage, cracks or honeycomb surface. When lifting the pipeline, the maximum angle of the lifting rope should not exceed 60° to ensure that the elastic force of the pipeline and the rope is minimal. After the installation of the pipeline in the trench is completed, the trench should be backfilled immediately. The material used for backfilling should be original soil. After the trench is backfilled, the pipeline should be pressure tested. Before the pipeline pressure test, the pipeline should be filled with water and soaked for more than 48 hours. During the pressure test, the air in the pipeline should be exhausted first. After the water fills the pipeline, the pipeline should be fully soaked for no less than 48 hours.

[0056] like Figure 1 As shown, optionally, the water lifting system further includes a high-level water tank 108 and a water lifting pipe 109, and the two ends of the water lifting pipe 109 are respectively connected to the high-level water tank 108 and the natural energy water pump 102, and the height of the high-level water tank 108 is higher than the highest water level of the water retaining dam 100. The lower end of the water lifting pipe 109 can be connected to the natural energy water pump 102 by screw connection. The higher end of the water lifting pipe 109 can be buried in the high-level water tank 108 during the construction of the high-level water tank 108.

[0057] like Figure 1 As shown, the high-level water tank 108 can be set at the top of the mountain. The high-level water tank 108 can accumulate water provided by the small-flow water-lifting pipe 109, and then transport it to the water supply object 106 through the large-flow second pipe 110, so as to realize large-flow water supply to the high-elevation water supply object. The natural energy water pump 102 can be located at the foot of the mountain. The elevation of the high-level water tank 108 is greater than the elevation of the water retaining dam 100, and the elevation of the water retaining dam 100 is greater than the elevation of the natural energy water pump 102. The high-level water tank 108 refers to a water tank whose height is higher than the highest water level of the water retaining dam 100.

[0058] Please also refer to Figure 1 and Figure 2 Optionally, the water lifting system also includes a second pipeline 110 and a third control valve 111, the two ends of the second pipeline 110 are respectively connected to the high-level water tank 108 and the water supply object 106, the third control valve 111 is arranged in the second pipeline 110, the third control valve 111 is located between the high-level water tank 108 and the water supply object 106, the third control valve 111 and the controller 107 are electrically connected, when the height of the water supply object 106 is higher than the highest water level of the dam 100, the controller 107 controls the second control valve 105 to open and the third control valve 111 to open.

[0059] like Figure 1As shown, in this arrangement, when the height of the water supply object 106 is higher than the highest water level of the water retaining dam 100, the high-level water tank 108 can supply water to the water supply object 106. The higher end of the second pipe 110 can be buried in the high-level water tank 108 during the construction of the high-level water tank 108, and the lower end of the second pipe 110 can be connected to the water supply network of the water supply object 106 by screw connection.

[0060] Please also refer to Figure 1 and Figure 2 Optionally, the water lifting system further includes a liquid level meter 112, which is disposed in the high-level water tank 108. The liquid level meter 112 is electrically connected to the controller 107. When the liquid level meter 112 detects that the high-level water tank 108 is full of water, the controller 107 controls the second control valve 105 to close. This arrangement can avoid the water in the high-level water tank 108 from overflowing and being wasted when it is full. The liquid level meter 112 can be a capacitive liquid level transmitter, a magnetostrictive liquid level transmitter, or an ultrasonic liquid level transmitter. The liquid level meter 112 can be electrically connected to the controller 107 via wires.

[0061] like Figure 1 As shown, optionally, the inner diameter of the second pipe 110 is greater than the inner diameter of the water lifting pipe 109. In this way, the water flow provided to the water supply object 106 at a height higher than the highest water level of the water barrier 100 can be increased. The inner diameters of the power pipe 101, the first pipe 103 and the second pipe 110 can be the same.

[0062] like Figure 1 As shown, optionally, the first control valve 104 is located on the first pipeline 103 near the connection point P1, and the second control valve 105 is located on the power pipeline 101 near the connection point P1. With such a configuration, when the first control valve 104 and the second control valve 105 are closed, it is possible to avoid excessive water remaining in the first pipeline 103 and the power pipeline 101. That is, the length of the water-containing section in the first pipeline 103 after the first control valve 104 is closed is reduced. The length of the water-containing section in the power pipeline 101 after the second control valve 105 is closed is also reduced, and thus the amount of water leakage in the first pipeline 103 and the power pipeline 101 is also reduced. The connection point P1 can be set on the power pipeline 101 near the water dam 100.

[0063] like Figure 1As shown, the water retaining dam 100 is optionally a rolling dam. The water retaining dam 100 adopts a rolling dam, which can intercept the necessary amount of water to provide to the water supply object 106, and also allow the excess water to overflow from the top of the water retaining dam 100, taking into account the water supply stability and safety of the water retaining dam 100. The rolling dam, also called the low overflow weir, is a relatively low-height water retaining structure, and its main function is to raise the upstream water level and retain mud and sand. The rolling dam can raise the water level to a certain position, and when the water rises, the excess water can overflow freely and flow downstream.

[0064] Second embodiment

[0065] like Figure 3 As shown, in this embodiment, a water extraction method is provided, using the water extraction system in the first embodiment, comprising:

[0066] S1: The water intercepted by the water retaining dam 100 enters the power pipeline 101 and the natural energy water pump 102; and

[0067] S2: When the height of the water supply object 106 is lower than the lowest water level of the water retaining dam 100, the first control valve 104 is controlled to open.

[0068] The water extraction method also includes:

[0069] S3: The water in the water lifting pipe 109 is passed to the high-level water tank 108; and

[0070] S4: When the height of the water supply object 106 is higher than the highest water level of the water retaining dam 100, the second control valve 105 is controlled to be opened and the third control valve 111 is controlled to be opened. At the same time, the first control valve 104 can also be controlled to be closed.

[0071] Please also refer to Figure 1 and Figure 2 The water extraction method further includes controlling the third control valve 111 to close when the height of the water supply object 106 is lower than the lowest water level of the water dam 100, wherein the third control valve 111 is located on the second pipeline 110 near the high-level water tank 108. Such a configuration can avoid excessive water from being retained in the second pipeline 110 and prevent water from leaking from the second pipeline 110. That is, the length of the water-containing section in the second pipeline 110 after the third control valve 111 is closed can be reduced, and the amount of water leakage in the second pipeline 110 can also be reduced. The opening and closing of the first control valve 104, the second control valve 105 and the third control valve 111 can be controlled by the controller 107.

[0072] The above is a detailed introduction to the water extraction system and water extraction method provided in the embodiments of the present application. For those skilled in the art, according to the ideas of the embodiments of the present application, there will be some changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation to the present application, and all equivalent modifications or changes made according to the spirit and technical ideas of the present application should still be covered by the claims of the present application.

Claims

1. A water pumping system, characterized in that: include: water-blocking dam; A power pipeline, one end of which is connected to the water retaining dam; A natural energy water pump connected to the other end of the power pipeline; A first pipeline, one end of which is connected to the power pipeline at a connection point; a first control valve, which is disposed on the first pipeline; A second control valve, which is arranged on the power pipeline, and the second control valve is located between the connection point and the natural energy water pump; a water supply object connected to the other end of the first pipe, the first control valve being located between the connection point and the water supply object; and A controller is electrically connected to the first control valve and the second control valve. When the height of the water supply object is lower than the lowest water level of the water retaining dam, the controller controls the first control valve to open and controls the second control valve to close.

2. The water pumping system according to claim 1, characterized in that: It also includes a high-level water tank and a water-lifting pipeline. The two ends of the water-lifting pipeline are respectively connected to the high-level water tank and the natural energy water pump. The height of the high-level water tank is higher than the highest water level of the water retaining dam.

3. The water extraction system according to claim 2, characterized in that: It also includes a second pipeline and a third control valve, wherein both ends of the second pipeline are respectively connected to the high-level water tank and the water supply object, and the third control valve is arranged in the second pipeline, and the third control valve is located between the high-level water tank and the water supply object. The third control valve is electrically connected to the controller, and when the height of the water supply object is higher than the highest water level of the water retaining dam, the controller controls the second control valve to open and the third control valve to open.

4. The water extraction system according to claim 3, characterized in that: It also includes a liquid level meter, which is arranged in the high-level water tank. The liquid level meter is electrically connected to the controller. When the liquid level meter detects that the high-level water tank is full of water, the controller controls the second control valve to close.

5. The water extraction system according to claim 3, characterized in that: The inner diameter of the second pipeline is larger than the inner diameter of the water pumping pipeline.

6. The water extraction system according to any one of claims 1 to 5, characterized in that: The first control valve is located on the first pipeline close to the connection point, and the second control valve is located on the power pipeline close to the connection point.

7. The water extraction system according to any one of claims 1 to 5, characterized in that: The water retaining dam is a rolling dam.

8. A water extraction method, using the water extraction system according to claim 3, characterized in that: include: The water intercepted by the water retaining dam enters the power pipeline and natural energy water pump; as well as When the height of the water supply object is lower than the lowest water level of the water retaining dam, the first control valve is controlled to open.

9. The water extraction method according to claim 8, characterized in that: Also includes: The water in the water lifting pipeline is passed to the high-level water tank; as well as When the height of the water supply object is higher than the highest water level of the water retaining dam, the second control valve and the third control valve are controlled to open.

10. The water extraction method according to claim 8, characterized in that: The method also includes controlling the third control valve to close when the height of the water supply object is lower than the lowest water level of the dam, wherein the third control valve is located on the second pipeline near the high-level water tank.

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