Series-parallel circulating irrigation device for different-elevation ecological slope protection groups of pumped storage power station and operation method

Abstract

The invention provides a series-parallel circulating irrigation device for different-elevation ecological slope protection groups of a pumped storage power station and an operation method. The series-parallel circulating irrigation device comprises a pipe network system used for conveying irrigation water, and part of devices of the pumped storage power station are connected with the pipe network system and provide an irrigation water source; the pipe network system is laid on the ecological restoration side slope; the pipe network system is connected with the data acquisition and processing system, and a filtering device is arranged in the pipe network system. According to the device, pumped and stored water resources can be fully utilized, targeted automatic irrigation of ecological slope protection groups with different elevations is achieved, and meanwhile redundant water resources can be filtered and used for irrigation and power generation of lower slope surfaces. The device is organically combined with a pumped storage system, and the effects of recycling water resources and saving energy are achieved.

Description

Technical Field

[0001] The invention belongs to the field of irrigation devices, and in particular relates to a series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station and an operation method thereof. Background Art

[0002] my country has been committed to the construction and development of water conservancy and hydropower engineering facilities. As an efficient energy storage and conversion facility, pumped storage power stations are increasingly used around the world. They balance the fluctuations in supply and demand of the power grid by using excess electricity to pump water from low places to high places during low electricity consumption, and then release water to generate electricity during peak electricity consumption. Pumped storage power stations play an important role in peak-valley load regulation and frequency control of the power system due to their flexibility, high efficiency and high-power energy storage.

[0003] However, the construction and operation of pumped storage power stations will 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 slopes, and the intensification of soil erosion. If ecological restoration is not carried out in time, these exposed slopes will become the main source of soil erosion, seriously affecting the surrounding ecological environment. The lack of vegetation makes it impossible to effectively absorb and retain rainwater, resulting in an increase in surface runoff and affecting the downstream water quality.

[0004] In recent years, relevant government departments have paid more and more attention to the ecological restoration of slopes. However, there is a large height difference between the upper and lower reservoirs of pumped storage power stations, and the slopes generated by power station construction often have significant elevation differences. Due to the limitations of terrain and geological conditions, the allocation and transportation of irrigation water may face difficulties. This makes irrigation more difficult and poses a great challenge to the growth and recovery of vegetation. In addition, these slopes require a lot of human resources to maintain. The actual situation is that the lack of human resources has caused some slopes to be inadequately maintained, resulting in poor ecological restoration of the slopes. Summary of the invention

[0005] The purpose of the present invention is to provide a series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station and an operation method. The device can make full use of the pumped water resources to achieve targeted automatic irrigation of ecological slope protection groups at different elevations, and can also filter excess water resources for irrigation and power generation on lower slopes. The device is organically combined with the pumped storage system to play a role in recycling water resources and saving energy.

[0006] In order to realize the above-mentioned technical features, the purpose of the present invention is realized as follows: a series-parallel circulating irrigation device for ecological slope protection groups at different elevations of a pumped-storage power station, including a pipe network system for conveying irrigation water, some devices of the pumped-storage power station are connected to the pipe network system and provide irrigation water; the pipe network system is laid on the ecological restoration slope; the pipe network system is connected to a data acquisition and processing system, and a filtering device is arranged inside the pipe network system.

[0007] The pipe network system is a plurality of PVC water pipes arranged on the ecological restoration slope, including 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 main valve; the main water pipe and the branch water pipe are connected in series, a main valve is installed on the main water pipe, and the branch water pipes are connected in parallel. The branch water pipes are arranged on the slope of the ecological restoration slope, and a return water pipe is arranged at the bottom of the slope of the ecological restoration slope, and a filtering device for filtering return water is provided in the return water pipe.

[0008] The data acquisition and processing system includes a soil moisture sensor buried in the slope soil, a data processing device located at the top of the slope and a total data processing device; multiple soil moisture sensors are connected in parallel and then connected in series with the total data processing device.

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

[0010] The pumped storage power station comprises an upper reservoir, a turbine, a tailwater pipe and a lower reservoir; the upper reservoir is connected to the turbine via a main water pipe, and the tailwater pipe of the turbine is connected to the lower reservoir.

[0011] Soil moisture sensors are buried in the soil of slopes for ecological restoration at different elevations.

[0012] The slope is connected in series, and one end of the branch water pipe connected to the main water pipe is provided with a two-way valve controlled by a soil moisture sensor.

[0013] Parallel slope, one end of the branch water pipe connected to the main water pipe is provided with a two-way valve controlled by a soil moisture sensor; each branch water pipe is also provided with a one-way valve controlled by a soil moisture sensor.

[0014] The return pipe connects the drainage ditch at the bottom of each slope and the main water pipe; One end of the main water pipe connected to the upper reservoir is provided with a main valve controlled by a main data processing device.

[0015] An operation method of a series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station: When the irrigation device is running, it can be divided into the following two situations: S1: When the soil moisture content measured by a series of slope soil moisture sensors is less than the soil moisture content set by the system, the main data processing device controls the main valve to open, and at the same time, the data processing device on the branch controls the two-way valve to open at the branch pipe and close at the main pipe; at this time, water resources flow from the upper reservoir to the water-deficient slope for irrigation; at the same time, the excess water resources remaining from the slope irrigation are collected in the drainage ditch at the bottom of the slope, filtered by the filtering device, and flow back to the main pipe through the return pipe for irrigation of the low slope; If the low slope surface is not short of water, this part of water resources will flow to the turbine through the main water pipe for power generation; when the slope surface reaches the condition for stopping irrigation, that is, the measured soil moisture content is greater than or equal to the set soil moisture content, the main valve is closed, and the branch two-way valve is closed at the branch water pipe and opened at the main water pipe, and irrigation stops; S2: A one-way valve is separately set at each parallel slope branch pipe. When one of the slopes is short of water, the data processing device controls the corresponding one-way valve to open. The remaining steps are the same as S1.

[0016] The present invention has the following beneficial effects: 1. The present invention is connected with a hydroelectric power generation device - a part of a pumped storage power station. The pumped storage water resources are used as the water source of the irrigation system, which can save the cost of separate pumping.

[0017] 2. A series-parallel pipe network structure and soil moisture monitoring device are used to construct a unified irrigation system for the ecological slope protection group of the pumped-storage power station. By controlling the opening and closing of the main water pipe and each branch pipe, targeted irrigation of ecological restoration slopes at different elevations can be achieved.

[0018] 3. The ecological slope protection group series-parallel circulation irrigation device is fully integrated with the pumped storage power station system to realize the automatic irrigation of slope plants, solve the problem of slope maintenance requiring a large amount of human resources, and improve the ecological greening effect of the slope.

[0019] 4. Excess water resources left over from irrigation can be used for power generation, serving the pumped storage power station system, playing a role in dynamic circulation and effective use of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 This is an application scenario 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.

[0022] Figure 2 The present invention is a working logic diagram of a series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station.

[0023] Figure 3This is a layout logic diagram of the series-parallel circulation irrigation devices of the first pumped storage power station at different elevations of the ecological slope protection group of the present invention.

[0024] Figure 4 This is a layout logic diagram of the second type of pumped storage power station in the present invention, in which the series-parallel circulation irrigation devices of the ecological slope protection groups at different elevations are arranged.

[0025] Figure 5 This is a layout logic diagram of the series-parallel circulation irrigation devices of the third pumped storage power station at different elevations of the ecological slope protection group of the present invention.

[0026] In the figure: pipe network system 1, data acquisition and processing system 2, filtering device 3, part of pumped storage power station device 4; Main water pipe 11, branch water pipe 12, return pipe 13, two-way valve 14, one-way valve 15, main valve 16; Soil moisture sensor 21, data processing device 22, overall data processing device 23; Upper reservoir 41, turbine 42, tailwater pipe 43, lower reservoir 44. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0028] like Figure 1-5 As shown, a series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped-storage power station includes a pipe network system 1 for conveying irrigation water, and a part of the pumped-storage power station device 4 is connected to the pipe network system 1 and provides irrigation water; the pipe network system 1 is laid on the slope for ecological restoration; the pipe network system 1 is connected to a data acquisition and processing system 2, and a filtering device 3 is arranged inside the pipe network system 1. Through the parallel circulation 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 a signal to the data processing device to control the opening and closing of the valve. The device can make full use of the pumped water resources to realize targeted automatic irrigation of ecological slope protection groups at different elevations, and can also filter the excess water resources for irrigation and power generation on lower slopes. The device is organically combined with the pumped-storage system to play a role in recycling water resources and saving energy.

[0029] Further, the pipe network system 1 is a plurality of PVC water pipes arranged on the ecological restoration slope, including a main water pipe 11, a branch water pipe 12, a return water pipe 13, a two-way valve 14 controlled by a sensor, a one-way valve 15 controlled by a sensor, and a main valve 16; the main water pipe 11 and the branch water pipe 12 are connected in series, the main water pipe 11 is equipped with a main valve 12, and the branch water pipes 12 are connected in parallel, the branch water pipes 12 are arranged on the slope of the ecological restoration slope, and a return water pipe 13 is arranged at the bottom of the slope of the ecological restoration slope, and a filter device 3 for filtering the return water is arranged in the return water pipe 13. Through the above-mentioned pipe network system 1, the water inside the main water pipe 11 can be supplied to the corresponding branch water pipe 12, and then the ecological restoration slope is irrigated accordingly through the branch water pipe 12, and the return water is realized through the return water pipe 13, and the main valve 12 is used to control the total water supply process.

[0030] Furthermore, the data acquisition and processing system 2 includes a soil moisture sensor 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. The data acquisition and processing system 2 can realize automatic control of the water supply process through feedback regulation.

[0031] Furthermore, the filter device 3 is a semi-permeable membrane structure that only allows water to pass through. The filter device 3 can be used to filter the return water.

[0032] Furthermore, the pumped storage power station device 4 includes an upper reservoir 41, a turbine 42, a tailwater pipe 43 and a lower reservoir 44; the upper reservoir 41 is connected to the turbine 42 through the main water pipe 11, and the tailwater pipe 43 of the turbine 42 is connected to the lower reservoir 44. Through the above-mentioned pumped storage power station device 4, when the power consumption is low at night, the pumped storage power station pumps the water resources of the lower reservoir 44 to the upper reservoir 41 for storage. The present invention uses the pumped water resources as the water source of the irrigation system, which can save the cost of separate pumping. At the same time, the excess water resources left over from irrigation can be used for irrigation on lower slopes, or flow to the lower reservoir 44 again through the turbine 42 for power generation, serving the pumped storage power station system, playing a role in dynamic circulation and effective utilization of water resources.

[0033] Furthermore, soil moisture sensors 21 are buried in the soil of the ecological restoration slopes at different elevations. The soil moisture sensors 21 can be used to detect the moisture content of the soil, thereby achieving the purpose of automatically controlling the irrigation process.

[0034] Furthermore, the slope is connected in series, and one end of the branch water pipe 12 connected to the main water pipe 11 is provided with a two-way valve 14 controlled by a soil moisture sensor 21.

[0035] Furthermore, in the parallel slope, one end of the branch water pipe 12 connected to the main water pipe 11 is provided with a two-way valve 14 controlled by a soil moisture sensor 21; each branch water pipe 12 is also provided with a one-way valve 15 controlled by the soil moisture sensor 21.

[0036] Furthermore, the return pipe 13 is connected to the drainage ditch at the bottom of each slope and is connected to the main water pipe 11. The return pipe 13 can realize the return control of irrigation water.

[0037] Furthermore, one end of the main water pipe 11 connected to the upper reservoir 41 is provided with a main valve 16 controlled by the main data processing device 23. The main valve 16 can be used to control the water supply of the main water pipe 11.

[0038] Embodiment 2: During the low-peak hours of electricity consumption at night, the pumped-storage power station pumps water from the lower reservoir 44 to the upper reservoir 41 for storage. The present invention uses the pumped-storage water as the water source for the irrigation system, which can save the cost of separate pumping. At the same time, the excess water remaining from irrigation can be used for irrigation on lower slopes, or flow through the turbine 42 to the lower reservoir 44 for power generation, serving the pumped-storage power station system, playing a role in dynamic circulation and effective utilization of water resources.

[0039] Embodiment 3: An operation method of a series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station: When the irrigation device is running, it can be divided into the following two situations: S1: When the soil moisture content measured by the soil moisture content sensor 21 of a certain series slope is less than the soil moisture content set by the system, the total data processing device 23 controls the main valve 16 to open, and at the same time, the data processing device 22 on the branch controls the two-way valve 14 to open at the branch pipe 12 and close at the main pipe 11; at this time, water resources flow from the upper reservoir 41 to the water-deficient slope for irrigation; at the same time, the excess water resources remaining from the slope irrigation are collected in the drainage ditch at the bottom of the slope, filtered by the filter device 3, and flow back to the main pipe 11 through the return pipe 13 for low slope irrigation; If the low slope surface is not short of water, the water resources will flow to the turbine 42 through the main water pipe 11 for power generation; when the slope surface reaches the condition for stopping irrigation, that is, the measured soil moisture content is greater than or equal to the set soil moisture content, the main 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 irrigation stops; S2: A one-way valve 15 is separately provided at each parallel slope branch water pipe 12. When one of the slopes is short of water, the data processing device 22 controls the corresponding one-way valve 15 to open. The remaining steps are the same as S1.

Claims

1. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station, characterized in that: The invention comprises a pipe network system (1) for conveying irrigation water, wherein a pumped storage power station device (4) is connected to the pipe network system (1) and provides an irrigation water source; the pipe network system (1) is laid on an ecological restoration slope; the pipe network system (1) is connected to a data acquisition and processing system (2), and a filtering device (3) is arranged inside the pipe network system (1).

2. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 1, characterized in that: The pipe network system (1) is a plurality of PVC water pipes arranged on an 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 main 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 a main valve (12), the branch water pipes (12) are connected in parallel, the branch water pipes (12) are arranged on the slope of the ecological restoration slope, the return water pipe (13) is arranged at the bottom of the slope of the ecological restoration slope, and a filtering device (3) for filtering return water is arranged in the return water pipe (13).

3. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 2, characterized in that: The data acquisition and processing system (2) comprises a soil moisture sensor (21) embedded in the soil of the slope, 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).

4. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 3, characterized in that: The filtering device (3) is a semi-permeable membrane structure that only allows water to pass through.

5. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 3, characterized in that: The pumped storage power station partial device (4) comprises an upper reservoir (41), a water turbine (42), a tailwater pipe (43) and a lower reservoir (44); the upper reservoir (41) is connected to the water turbine (42) via a main water pipe (11), and the tailwater pipe (43) of the water turbine (42) is connected to the lower reservoir (44).

6. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 5, characterized in that: Soil moisture sensors were buried in the soil of slopes for ecological restoration at different elevations (21).

7. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 5, characterized in that: The slope is connected in series, and one end of the branch water pipe (12) connected to the main water pipe (11) is provided with a two-way valve (14) controlled by a soil moisture sensor (21).

8. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 5, characterized in that: A parallel slope, wherein one end of the branch water pipe (12) connected to the main water pipe (11) is provided with a two-way valve (14) controlled by a soil moisture sensor (21); and each branch water pipe (12) is also provided with a one-way valve (15) controlled by the soil moisture sensor (21).

9. A series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to claim 5, characterized in that: The return pipe (13) is connected to the drainage ditch at the bottom of each slope and is connected to the main water pipe (11); One end of the main water pipe (11) connected to the upper water reservoir (41) is provided with a main valve (16) controlled by a main data processing device (23).

10. The method for operating the series-parallel circulation irrigation device for ecological slope protection groups at different elevations in a pumped storage power station according to any one of claims 6 to 9, characterized in that: When the irrigation device is running, it can be divided into the following two situations: S1: When the soil moisture content measured by a series-connected slope soil moisture sensor (21) is less than the soil moisture content set by the system, the main data processing device (23) controls the main valve (16) to open, and at the same time, the data processing device (22) on the branch controls the two-way valve (14) to open at the branch pipe (12) and close at the main pipe (11); at this time, water resources flow from the upper reservoir (41) into the water-deficient slope for irrigation; at the same time, the excess water resources remaining from the slope irrigation are collected in the drainage ditch at the bottom of the slope, filtered by the filtering device (3), and then flow back to the main pipe (11) through the return pipe (13) for irrigation of the low slope; If the low slope surface is not short of water, the water resources flow to the turbine (42) through the main water pipe (11) for power generation; when the slope surface reaches the irrigation stop condition, that is, the measured soil moisture content is greater than or equal to the set soil moisture content, the main 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 irrigation stops; S2: A one-way valve (15) is separately provided at each of the parallel slope branch water pipes (12). When one of the slopes is short of water, the data processing device (22) controls the corresponding one-way valve (15) to open. The remaining steps are the same as S1.

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