A pumped storage power station different elevation ecological slope group series-parallel circulating irrigation device and operation method

Abstract

The application provides a pumped storage power station different elevation ecological slope group series-parallel circulation irrigation device and operation method, which comprises a pipe network system for irrigation water delivery, and a pumped storage power station part device connected with the pipe network system and providing an irrigation water source; the pipe network system is laid on an ecological restoration slope; the pipe network system is connected with a data acquisition and processing system, and a filter device is arranged in the pipe network system. The device can fully utilize the pumped storage water resources, realizes targeted automatic irrigation of different elevation ecological slope groups, and can also filter the excess water resources for lower slope irrigation and power generation. The device is organically combined with the pumped storage system, and plays a role of water resource recycling and energy saving.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of irrigation devices, and particularly relates to a pumped storage power station different elevation ecological slope group series-parallel circulating irrigation device and operation method. BACKGROUND

[0002] China has been committed to the construction and development of water conservancy and hydropower engineering facilities, and pumped storage power stations, as an efficient energy storage and conversion facility, are increasingly widely used around the world. They use excess power to pump water from low to high during low electricity consumption, and then generate electricity during high electricity consumption to balance the supply and demand fluctuations of the power grid. Pumped storage power stations play an important role in peak and valley regulation of power systems due to their flexibility, efficiency and high-power energy storage characteristics.

[0003] However, the construction and operation of pumped storage power stations inevitably have a series of impacts on the surrounding environment. During the construction of the power station, large-scale earthwork and rock excavation are inevitable, which leads to the destruction of the original vegetation, the exposure of the slope, and the intensification of soil erosion. If ecological restoration is not carried out in time, these exposed slopes will become the main source of water and soil loss, seriously affecting the surrounding ecological environment. The lack of vegetation makes it difficult for rainwater to be effectively absorbed and retained, resulting in increased surface runoff and affecting downstream water quality.

[0004] In recent years, the government departments have paid more and more attention to the ecological greening of slopes. However, the height difference between the upper and lower reservoirs of pumped storage power stations is large, and the slopes generated by the construction of the power station often have significant elevation differences. Due to the limitations of topography and geological conditions, the deployment and delivery of irrigation water may face difficulties, thereby increasing the difficulty of irrigation and posing great challenges to the growth and recovery of vegetation. In addition, these slopes require a large amount of human resources for maintenance, and the actual situation is that the lack of human resources causes some slopes to be not maintained properly, resulting in poor ecological greening effect of the slopes. SUMMARY

[0005] The purpose of the present application is to provide a pumped storage power station different elevation ecological slope group series-parallel circulating irrigation device and operation method, which can make full use of pumped water resources, realize targeted automatic irrigation of different elevation ecological slope groups, and also filter excess water resources for lower slope irrigation and power generation. The device is organically combined with the pumped storage system, and plays a role in water resource recycling and energy saving.

[0006] In order to realize the above technical features, the purpose of the present application is realized as follows: a pumped storage power station different elevation ecological slope protection group series-parallel circulating irrigation device, comprising a pipe network system for irrigation water delivery, a pumped storage power station part device connected with the pipe network system and providing an irrigation water source; the pipe network system is laid on the ecological restoration slope; the pipe network system is connected with a data acquisition and processing system, and a filter device is arranged in the pipe network system.

[0007] The pipe network system is a plurality of PVC water pipes arranged on the ecological restoration slope, comprising a main water pipe, a branch water pipe, a return water pipe, a sensor-controlled two-way valve, a sensor-controlled one-way valve and a total valve; the main water pipe and the branch water pipe are connected in series, the total valve is installed on the main water pipe, the branch water pipes are connected in parallel, the branch water pipes are arranged on the slope body of the ecological restoration slope, the return water pipe is arranged at the bottom of the ecological restoration slope, and the filter device for filtering backflow water is arranged in the return water pipe.

[0008] The data acquisition and processing system comprises soil moisture content sensors embedded in the slope soil, a data processing device located at the top of the slope and a total data processing device; a plurality of soil moisture content sensors are connected in parallel and then connected in series with the total data processing device.

[0009] The filter device is a semi-permeable membrane structure that only allows water to pass through.

[0010] The pumped storage power station part device comprises an upper reservoir, a water turbine, a tail water pipe and a lower reservoir; the upper reservoir is connected with the water turbine through the main water pipe, and the tail water pipe of the water turbine is connected with the lower reservoir.

[0011] Soil moisture content sensors are embedded in the soil of the different elevation ecological restoration slope.

[0012] The branch water pipe and the main water pipe are connected at one end, and a two-way valve controlled by a soil moisture content sensor is arranged at the connected end.

[0013] The branch water pipe and the main water pipe are connected at one end, and a two-way valve controlled by a soil moisture content sensor is arranged at the connected end; a one-way valve controlled by a soil moisture content sensor is further arranged in each branch water pipe.

[0014] The return water pipe is connected with the drainage ditches at the bottom of each slope surface and connected with the main water pipe;

[0015] The main water pipe is connected with the upper reservoir at one end, and a total valve controlled by a total data processing device is arranged at the connected end.

[0016] A running method of a pumped storage power station different elevation ecological slope protection group series-parallel circulating irrigation device:

[0017] When the irrigation device is running, it is divided into the following two cases:

[0018] S1: When the soil moisture content measured by a certain series of slope soil moisture content sensor is less than the system set soil moisture content, the total data processing device controls the total valve to open, at the same time, the data processing device of the branch controls the two-way valve to open at the branch water pipe and to close at the main water pipe; at this time, the water resources flow into the water shortage slope from the upper reservoir for irrigation; at the same time, the excess water resources left after the slope irrigation are collected in the drainage ditch at the bottom of the slope, filtered by the filter device and then flow back to the main water pipe for low slope irrigation;

[0019] If the low slope is not water shortage, the part of water resources flow to the water turbine through the main water pipe for power generation; when the slope reaches the stop irrigation condition, that is, the measured soil moisture content is greater than or equal to the set soil moisture content, the total valve is closed, and the branch two-way valve is closed at the branch water pipe and opened at the main water pipe, and the irrigation is stopped;

[0020] S2: A one-way valve is separately arranged at each branch water pipe of the parallel slope, when one of the slopes is water shortage, the data processing device controls the corresponding one-way valve to open, and the remaining steps are the same as S1.

[0021] The present application has the following beneficial effects:

[0022] 1. The present application is connected with the water power generation device-pumped storage power station part device. The water resources of pumping and storage are used as the water source of the irrigation system, which can save the cost of separate pumping.

[0023] 2. The series-parallel pipe network structure and the soil moisture content monitoring device are adopted to construct the unified irrigation system of the pumped storage power station ecological slope protection group, the opening and closing of the main water pipe and each branch pipe are controlled to realize the targeted irrigation of different elevation ecological restoration slopes.

[0024] 3. The ecological slope protection group series-parallel circulating irrigation device is fully integrated with the pumped storage power station system, which realizes the automatic irrigation of the slope plants, solves the problem of needing a large amount of human resources for slope maintenance, and improves the slope ecological greening effect.

[0025] 4. The excess water resources left after irrigation can be used for power generation, serving the pumped storage power station system, playing a dynamic cycle and effective water resource utilization role. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below in combination with the drawings and examples.

[0027] Figure 1 It is the application scene diagram of the present application, a pumped storage power station different elevation ecological slope protection group series-parallel circulating irrigation device.

[0028] Figure 2This is a working logic diagram of a series-parallel circulating irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to the present invention.

[0029] Figure 3 This is a layout logic diagram of the first pumped storage power station of the present invention, showing the series-parallel circulating irrigation device for ecological slope protection groups at different elevations.

[0030] Figure 4 This is a layout logic diagram of the second type of pumped storage power station ecological slope protection group series-parallel circulating irrigation device at different elevations according to the present invention.

[0031] Figure 5 This is a layout logic diagram of the series-parallel circulating irrigation device for ecological slope protection groups at different elevations in the third type of pumped storage power station of the present invention.

[0032] In the diagram: 1. Pipeline system; 2. Data acquisition and processing system; 3. Filtration device; 4. Pumped storage power station components.

[0033] Main water pipe 11, branch water pipe 12, return water pipe 13, two-way valve 14, one-way valve 15, main valve 16;

[0034] Soil moisture content sensor 21, data processing device 22, total data processing device 23;

[0035] Upper reservoir 41, turbine 42, tailrace pipe 43, lower reservoir 44. Detailed Implementation

[0036] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0037] like Figures 1-5 As shown, a series-parallel circulating irrigation device for ecological slope protection groups at different elevations in a pumped-storage power station includes a pipeline system 1 for transporting irrigation water. A portion of the pumped-storage power station 4 is connected to the pipeline system 1 and provides irrigation water. The pipeline system 1 is laid on the ecologically restored slope. The pipeline system 1 is connected to a data acquisition and processing system 2, and a filter device 3 is installed inside the pipeline system 1. Through the parallel circulating irrigation device for ecological slope protection groups at different elevations in the pumped-storage power station, the soil moisture sensor in the data acquisition and processing system 2 transmits the signal to the data processing device, controlling the opening and closing of valves. This device can fully utilize pumped water resources to achieve targeted automatic irrigation for ecological slope protection groups at different elevations. It can also filter excess water for irrigation of lower slopes and power generation. This device, organically combined with the pumped-storage system, plays a role in water resource recycling and energy conservation.

[0038] Further, the pipe network system 1 is a plurality of PVC water pipes arranged on the ecological restoration slope, comprising a main water pipe 11, a branch water pipe 12, a return water pipe 13, a sensor-controlled two-way valve 14, a sensor-controlled one-way valve 15 and a total valve 16; the main water pipe 11 and the branch water pipe 12 are connected in series, the main water pipe 11 is provided with the total valve 16, the branch water pipes 12 are connected in parallel, the branch water pipe 12 is arranged on the slope body of the ecological restoration slope, the return water pipe 13 is arranged at the bottom of the ecological restoration slope, and the return water pipe 13 is provided with a filtering device 3 for filtering the backflow water. Through the above-mentioned pipe network system 1, the water in the main water pipe 11 can be supplied to the corresponding branch water pipe 12, then the ecological restoration slope is irrigated through the branch water pipe 12, the backflow water is realized through the return water pipe 13, and the total valve 16 is used for controlling the total water supply process.

[0039] Further, the data acquisition and processing system 2 comprises soil moisture sensors 21 embedded in the slope soil, a data processing device 22 located at the top of the slope and a total data processing device 23; a plurality of soil moisture sensors 21 are connected in parallel and then connected in series with the total data processing device 23. Through the above-mentioned data acquisition and processing system 2, the automation control of the water supply process can be realized through feedback regulation.

[0040] Further, the filtering device 3 is a semi-permeable membrane structure that only allows water to pass through. Through the above-mentioned filtering device 3, the backflow water can be filtered.

[0041] Further, the pumped storage power station part device 4 comprises an upper reservoir 41, a water turbine 42, a tail water pipe 43 and a lower reservoir 44; the upper reservoir 41 is connected with the water turbine 42 through the main water pipe 11, and the tail water pipe 43 of the water turbine 42 is connected with the lower reservoir 44. Through the above-mentioned pumped storage power station part device 4, the water resources of the lower reservoir 44 are pumped to the upper reservoir 41 for storage at night when the electricity demand is low. The pumped storage power station can save the cost of separate pumping by using the pumped water resources as the water source of the irrigation system. The remaining excess water resources can be used for irrigation on a lower slope, or flow to the lower reservoir 44 again through the water turbine 42 for power generation, serving the pumped storage power station system, playing a role of dynamic circulation and effective utilization of water resources.

[0042] Further, the soil moisture sensors 21 are embedded in the soil of the ecological restoration slope at different elevations. Through the above-mentioned soil moisture sensors 21, the moisture content of the soil can be detected, so as to achieve the purpose of automatically controlling the irrigation process.

[0043] Further, the branch water pipe 12 is provided with a two-way valve 14 controlled by the soil moisture sensor 21 at one end connected with the main water pipe 11.

[0044] Further, the branch water pipe 12 is provided with a two-way valve 14 at the end connected with the main water pipe 11, which is controlled by the soil moisture sensor 21; and a one-way valve 15 is further arranged in each branch water pipe 12, which is also controlled by the soil moisture sensor 21.

[0045] Further, the backwater pipe 13 is connected with the drainage ditch at the bottom of each slope and is connected with the main water pipe 11. The backwater pipe 13 can be used to control the backwater of the irrigation water.

[0046] Further, the main water pipe 11 is provided with a total valve 16 at the end connected with the upper reservoir 41, which is controlled by the total data processing device 23. The total valve 16 can be used to control the water supply of the main water pipe 11.

[0047] Embodiment 2

[0048] At night, the pumped storage power station pumps the water resources in the lower reservoir 44 to the upper reservoir 41 for storage. The pumped storage water resources can be used as the water source of the irrigation system, so that the cost of pumping water alone can be saved. The remaining excess water resources can be used for irrigation of lower slopes, or flow to the lower reservoir 44 again through the water turbine 42 for power generation, serving the pumped storage power station system, playing a dynamic cycle and effective use of water resources.

[0049] Embodiment 3

[0050] A running method of a pumped storage power station different-elevation ecological slope group series-parallel circulating irrigation device

[0051] When the irrigation device is running, it is divided into the following two cases:

[0052] S1: When the soil moisture sensor 21 of a certain series slope measures that the soil moisture is less than the soil moisture set by the system, the total data processing device 23 controls the total valve 16 to open, and at the same time, the data processing device 22 of the branch controls the two-way valve 14 to open at the branch water pipe 12 and to close at the main water pipe 11; at this time, the water resources flow into the water shortage slope from the upper reservoir 41 for irrigation; at the same time, the remaining excess water resources of the slope irrigation are collected in the drainage ditch at the bottom of the slope, filtered by the filter device 3, and then flow back to the main water pipe 11 through the backwater pipe 13 for low slope irrigation;

[0053] If the low slope is not water shortage, the part of water resources flow to the water turbine 42 through the main water pipe 11 for power generation; when the slope reaches the stop irrigation condition, that is, the measured soil moisture is greater than or equal to the set soil moisture, the total valve 16 is closed, and the two-way valve 14 of the branch is closed at the branch water pipe 12 and opened at the main water pipe 11, and the irrigation is stopped;

[0054] S2: a one-way valve 15 is arranged at each slope water pipe 12 in parallel, and when one of the slopes is short of water, the data processing device 22 controls the corresponding one-way valve 15 to open, and the remaining steps are the same as those in S1.

Claims

1. A method for operating a pumped storage power station different elevation ecological slope group series-parallel circulating irrigation device, the pumped storage power station different elevation ecological slope group series-parallel circulating irrigation device comprising a pipe network system (1) for irrigation water delivery, a pumped storage power station part device (4) connected with the pipe network system (1) and providing an irrigation water source; the pipe network system (1) is laid on an ecological restoration slope; the pipe network system (1) is connected with a data acquisition and processing system (2), and the pipe network system (1) is internally provided with a filtering device (3); the pipe network system (1) is a plurality of PVC water pipes arranged on the ecological restoration slope, comprising a main water pipe (11), a branch water pipe (12), a return water pipe (13), a sensor-controlled bidirectional valve (14), a sensor-controlled one-way valve (15), and a total valve (16); the main water pipe (11) and the branch water pipe (12) are connected in series, the main water pipe (11) is provided with the total valve (16), the branch water pipes (12) are connected in parallel, the branch water pipes (12) are arranged on the slope body of the ecological restoration slope, the return water pipe (13) is arranged at the bottom of the ecological restoration slope, and the return water pipe (13) is provided with the filtering device (3) for filtering backflow water; the data acquisition and processing system (2) comprises soil moisture content sensors (21) embedded in the slope soil, a data processing device (22) located at the top of the slope, and a total data processing device (23); a plurality of soil moisture content sensors (21) are connected in parallel and then connected in series with the total data processing device (23); the return water pipe (13) is connected with the main water pipe (11) and communicates with each slope bottom drainage ditch; one end of the main water pipe (11) connected with the upper reservoir (41) is provided with the total valve (16) controlled by the total data processing device (23); the pumped storage power station part device (4) comprises an upper reservoir (41), a water turbine (42), a tail water pipe (43), and a lower reservoir (44); the upper reservoir (41) is connected with the water turbine (42) through the main water pipe (11), the tail water pipe (43) of the water turbine (42) is connected with the lower reservoir (44); the branch water pipe (12) is provided with the bidirectional valve (14) controlled by the soil moisture content sensor (21) at one end connected with the main water pipe (11); the branch water pipe (12) is provided with the bidirectional valve (14) controlled by the soil moisture content sensor (21) at one end connected with the main water pipe (11); each branch water pipe (12) is further provided with the one-way valve (15) controlled by the soil moisture content sensor (21); characterized in that the operation method: when the irrigation device is operated, the following two cases are divided: S1: When the soil moisture content measured by a certain series of slope soil moisture content sensor (21) is less than the system set soil moisture content, the total data processing device (23) controls the total valve (16) to open, at the same time, the data processing device (22) on the branch controls the two-way valve (14) to open at the branch water pipe (12) and to close at the main water pipe (11); At this time, the water resources flow into the water shortage slope from the upper reservoir (41) for irrigation; At the same time, the excess water resources left by the slope irrigation are collected in the drainage ditch at the bottom of the slope, filtered by the filter device (3) and then flow back to the main water pipe (11) through the backwater pipe (13) for low slope irrigation; If the low slope is not water shortage, the part of water resources flow to the water turbine (42) through the main water pipe (11) for power generation; When the slope reaches the stop irrigation condition, that is, the measured soil moisture content is greater than or equal to the set soil moisture content, the total valve (16) is closed, and the branch two-way valve (14) is closed at the branch water pipe (12) and opened at the main water pipe (11), and the irrigation is stopped; S2: A one-way valve (15) is separately arranged at each branch water pipe (12) of the parallel slope, when one of the slopes is water shortage, the data processing device (22) controls the corresponding one-way valve (15) to open, and the remaining steps are the same as S1.

2. The operation method of the pumped storage power station different elevation ecological revetment group series-parallel circulating irrigation device according to claim 1, characterized in that: The filter device (3) is a semi-permeable membrane structure that only allows water to pass through.

3. The operation method of the pumped storage power station different elevation ecological revetment group series-parallel circulating irrigation device according to claim 1, characterized in that: The soil moisture content sensor (21) is buried in the soil of the different elevation ecological restoration slope.

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