Automatic control system for variable-frequency speed-regulating grading and zoning constant-pressure irrigation

Abstract

The utility model relates to the technical field of water conservancy projects, and discloses a variable-frequency speed-regulation grading and zoning constant-pressure irrigation automatic control system which comprises a main pipeline, one end of the main pipeline is connected with a bifurcated pipe, a first water pumping pipeline is arranged on one side of the lower portion of the bifurcated pipe, and one end of the first water pumping pipeline is connected with a first water pump; a second water pumping pipeline is arranged on the other side below the bifurcated pipe, one end of the second water pumping pipeline is connected with a second water pump, a branch pipe is connected to the outer surface of one side of the middle of the main pipeline, and one end of the branch pipe is connected with an irrigation mechanism. According to the automatic control system for variable-frequency speed-regulation grading and zoning constant-pressure irrigation, the states of the first water pump and the second water pump can be monitored through the equipment state monitor, when the first water pump breaks down, the second water pump starts to work, the second water pump continues to supply water to the main pipeline, the working water pump is rapidly switched after the water pump breaks down, and the working efficiency is improved. And the whole irrigation system does not need to be stopped when irrigation is needed.

Description

Technical Field

[0001] This application relates to the technical field of water conservancy projects, and specifically to a variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation automatic control system. Background Technique

[0002] In the field of agricultural irrigation, water-saving irrigation technology has always been a research hotspot and focus. With the increasing global water shortage, traditional irrigation methods are no longer able to meet the requirements of modern agriculture for efficient water use. Therefore, sprinkler and micro-irrigation (sprinkler irrigation and micro-irrigation) technologies, due to their advantages such as water conservation, yield increase, land saving, and strong adaptability, have gradually become one of the most widely used water-saving irrigation engineering technologies in the world. However, in practical applications, sprinkler and micro-irrigation systems face many challenges. Especially in the case of a large irrigation area or a large change in terrain elevation difference, traditional irrigation systems often have difficulty ensuring the irrigation uniformity, which in turn affects the growth and yield of crops. This is mainly because the pump motor usually operates at a constant speed using the power frequency power supply (50Hz), and its operating characteristics cannot adapt to the dynamic changes of the flow rate and pressure in the field pipe network. When the pipe network layout and irrigation devices are determined, the pressure change in the pipe network system becomes the key factor affecting the irrigation uniformity.

[0003] In the current irrigation system, when the pump fails during long-term operation, the entire irrigation control system needs to be shut down for a long time to repair the pump, which affects the irrigation work efficiency of crops. At the same time, the flow rate of water in the branch pipe cannot be adjusted according to the irrigation requirements of different crops, and it cannot adapt to the irrigation requirements of different crops. Utility Model Content

[0004] In view of the deficiencies of the prior art, this application provides a variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation automatic control system, which has the advantages of quickly switching the working pump after the pump fails, without shutting down the entire irrigation system when irrigation is needed, and at the same time can adjust the flow rate of water in different branch pipes according to the irrigation requirements of different crops, so that the irrigation system can adapt to the irrigation requirements of different crops at the same time. It solves the problems that in the current irrigation system, when the pump fails during long-term operation, the entire irrigation control system needs to be shut down for a long time to repair the pump, which affects the irrigation work efficiency of crops, and at the same time the flow rate of water in the branch pipe cannot be adjusted according to the irrigation requirements of different crops, and it cannot adapt to the irrigation requirements of different crops.

[0005] To achieve the above object of quickly switching the working water pump after a water pump failure, without shutting down the entire irrigation system when irrigation is needed, and at the same time being able to adjust the water flow rate in different branch pipes according to the irrigation requirements of different crops, so that the irrigation system can adapt to the irrigation requirements of different crops at the same time, the present application provides the following technical solutions: A variable frequency speed regulation hierarchical and zonal constant pressure irrigation automatic control system, including a main pipeline, one end of the main pipeline is connected with a bifurcated pipe, one side below the bifurcated pipe is provided with a first pumping pipeline, one end of the first pumping pipeline is connected with a first water pump, the other side below the bifurcated pipe is provided with a second pumping pipeline, one end of the second pumping pipeline is connected with a second water pump, one side of the middle part of the main pipeline is connected with a branch pipe, one end of the branch pipe is connected with an irrigation mechanism, a soil humidity sensor is arranged on the outer surface of one side of the middle part of the irrigation mechanism through a fixing plate, a control box is arranged on one side of the main pipeline, a signal processing controller is arranged inside the control box, the signal processing controller is connected with the soil humidity sensor through an electric signal, a frequency converter is arranged inside the control box, a programmable controller is arranged inside the control box, a programmable time control switch is arranged inside the control box, an equipment status monitor is arranged inside the control box, and a pressure gauge is arranged on the main pipeline.

[0006] Through the above solution, the status of the first water pump and the second water pump can be monitored by the equipment status monitor. When the first water pump fails, the second water pump will start to work, so that the second water pump continues to supply water to the main pipeline, achieving the effect of quickly switching the working water pump after a water pump failure and not shutting down the entire irrigation system when irrigation is needed.

[0007] Further, one end of the first pumping pipeline is connected with a first check valve, the first check valve is connected to one end below the bifurcated pipe, the first pumping pipeline is communicated with the bifurcated pipe through the first check valve, and the flow direction of the first check valve is set unidirectionally.

[0008] Through the above solution, the setting of the first check valve can prevent the water entering the bifurcated pipe from entering the first pumping pipeline and not being able to fully enter the main pipeline for use when the second water pump is working, preventing waste of energy.

[0009] Further, one end of the second pumping pipeline is connected with a second check valve, the second check valve is connected to one end below the bifurcated pipe, the second pumping pipeline is communicated with the bifurcated pipe through the second check valve, and the flow direction of the second check valve is set unidirectionally.

[0010] Through the above solution, the setting of the second check valve can prevent the water entering the bifurcated pipe from entering the second pumping pipeline and not being able to fully enter the main pipeline for use when the first water pump is working, preventing waste of energy.

[0011] Further, a throttle valve is provided in the middle of the branch pipe, and the throttle valve is located at the front end of the flow sensor.

[0012] Through the above solution, the flow rate of water in the branch pipe can be controlled by setting the throttle valve, so that the flow rate of water in the branch pipe meets the irrigation requirements of crops.

[0013] Further, a flow sensor is provided in the middle of the branch pipe, and the flow sensor is connected to the signal processing controller through an electrical signal.

[0014] Through the above solution, the flow rate of water in the branch pipe can be detected by setting the flow sensor to see if it meets the irrigation requirements of the crops corresponding to the branch pipe, and then the signal is transmitted to the signal processing controller through the flow sensor for processing.

[0015] Further, the programmable controller is connected to the frequency converter through an electrical signal, and the programmable controller is connected to the signal processing controller through an electrical signal.

[0016] Through the above solution, the signal processing controller transmits a signal to the programmable controller, and the programmable controller starts to control the operation of the frequency converter, so that the frequency converter controls the operation of the first water pump or the second water pump.

[0017] Further, the programmable time control switch is connected to the throttle valve through an electrical signal, and the programmable time control switch is connected to the signal processing controller through an electrical signal.

[0018] Through the above solution, the signal processing controller transmits a signal to the programmable time control switch, and the programmable time control switch can control the throttle valve, controlling the on / off of the throttle valve and the flow rate of water in the throttle valve.

[0019] Further, the equipment status monitor is connected to the first water pump and the second water pump through electrical signals, the equipment status monitor is connected to the signal processing controller through an electrical signal, and the first water pump and the second water pump are connected to the frequency converter through electrical signals.

[0020] Through the above solution, when the equipment status monitor detects that the first water pump fails, the equipment status monitor transmits a fault signal to the signal processing controller, causing the frequency converter to start controlling the second water pump to work and continue to supply water.

[0021] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0022] The variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation automatic control system can monitor the states of the first water pump and the second water pump through the equipment status monitor. When the first water pump fails, the second water pump will start working to continue supplying water to the main pipeline, achieving the effect of quickly switching the working water pump after the water pump fails and eliminating the need to shut down the entire irrigation system when irrigation is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0024] Figure 2 is a front structural schematic diagram of the present application;

[0025] Figure 3 is a right-side structural schematic diagram of the present application;

[0026] Figure 4 is a top-view structural schematic diagram of the present application.

[0027] In the figure:

[0028] 1. Main pipeline; 2. Branch pipe; 3. First check valve; 4. First pumping pipeline; 5. First water pump; 6. Second check valve; 7. Second pumping pipeline; 8. Second water pump; 9. Pressure gauge; 10. Branch pipe; 11. Irrigation mechanism; 12. Soil humidity sensor; 13. Throttle valve; 14. Flow sensor; 15. Control box; 16. Signal processing controller; 17. Frequency converter; 18. Programmable logic controller; 19. Programmable time control switch; 20. Equipment status monitor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3, a variable-frequency speed-regulation hierarchical and zonal constant-pressure irrigation automatic control system in this embodiment, includes a main pipeline 1. One end of the main pipeline 1 is connected to a bifurcated pipe 2. One side below the bifurcated pipe 2 is provided with a first pumping pipeline 4. One end of the first pumping pipeline 4 is connected to a first water pump 5. The other side below the bifurcated pipe 2 is provided with a second pumping pipeline 7. One end of the second pumping pipeline 7 is connected to a second water pump 8. One side of the middle part of the main pipeline 1 is connected with a branch pipe 10. One end of the branch pipe 10 is connected to an irrigation mechanism 11. One side of the middle part of the irrigation mechanism 11 is provided with a soil humidity sensor 12 through a fixing plate. One side of the main pipeline 1 is provided with a control box 15. Inside the control box 15, a signal processing controller 16 is arranged. The signal processing controller 16 is connected to the soil humidity sensor 12 through an electrical signal. Inside the control box 15, a frequency converter 17 is arranged. Inside the control box 15, a programmable logic controller 18 is arranged. Inside the control box 15, a programmable time control switch 19 is arranged. Inside the control box 15, a device status monitor 20 is arranged. A pressure gauge 9 is arranged on the main pipeline 1.

[0031] Please refer to Figure 1 and Figure 2 , one end of the first pumping pipeline 4 is connected to a first check valve 3. The first check valve 3 is connected to one end below the bifurcated pipe 2. The first pumping pipeline 4 is communicated with the bifurcated pipe 2 through the first check valve 3. The flow direction of the first check valve 3 is set unidirectionally. Through the setting of the first check valve 3, when the second water pump 8 works, the water entering the bifurcated pipe 2 will not enter the first pumping pipeline 4 and cannot completely enter the main pipeline 1 for use, preventing waste of energy.

[0032] Please refer to Figure 1 and Figure 2 , one end of the second pumping pipeline 7 is connected to a second check valve 6. The second check valve 6 is connected to one end below the bifurcated pipe 2. The second pumping pipeline 7 is communicated with the bifurcated pipe 2 through the second check valve 6. The flow direction of the second check valve 6 is set unidirectionally. Through the setting of the second check valve 6, when the first water pump 5 works, the water entering the bifurcated pipe 2 will not enter the second pumping pipeline 7 and cannot completely enter the main pipeline 1 for use, preventing waste of energy.

[0033] Please refer to Figure 1 and Figure 3 , a throttle valve 13 is arranged in the middle of the branch pipe 10. The throttle valve 13 is located at the front end of the flow sensor 14. Through the setting of the throttle valve 13, the water flow in the branch pipe 10 can be controlled to make the water flow in the branch pipe 10 meet the irrigation requirements of crops.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3, a flow sensor 14 is provided in the middle of the branch pipe 10. The flow sensor 14 is connected to the signal processing controller 16 through an electrical signal. By setting the flow sensor 14, it can be detected whether the water flow in the branch pipe 10 meets the irrigation requirements of the crops corresponding to the branch pipe 10. Furthermore, the signal is transmitted to the signal processing controller 16 through the flow sensor 14 for processing.

[0035] Please refer to Figure 1 and Figure 2 , the programmable controller 18 is connected to the frequency converter 17 through an electrical signal, and the programmable controller 18 is connected to the signal processing controller 16 through an electrical signal. The signal is transmitted to the programmable controller 18 through the signal processing controller 16, and the programmable controller 18 starts to control the operation of the frequency converter 17, so that the frequency converter 17 controls the operation of the first water pump 5 or the second water pump 8.

[0036] Please refer to Figure 1 , Figure 2 and Figure 3 , the programmable time control switch 19 is connected to the throttle valve 13 through an electrical signal, and the programmable time control switch 19 is connected to the signal processing controller 16 through an electrical signal. The signal is transmitted to the programmable time control switch 19 through the signal processing controller 16, and the programmable time control switch 19 can control the throttle valve 13, controlling the on-off of the throttle valve 13 and the water flow in the throttle valve 13.

[0037] Please refer to Figure 1 and Figure 2 , the device status monitor 20 is connected to the first water pump 5 and the second water pump 8 through an electrical signal, the device status monitor 20 is connected to the signal processing controller 16 through an electrical signal, and the first water pump 5 and the second water pump 8 are connected to the frequency converter 17 through an electrical signal. When the device status monitor 20 monitors that the first water pump 5 fails, the device status monitor 20 transmits the fault signal to the signal processing controller 16, so that the frequency converter 17 starts to control the second water pump 8 to work and continue to supply water.

[0038] In a variable frequency speed regulation hierarchical and zonal constant pressure irrigation automatic control system in this embodiment, the status of the first water pump 5 and the second water pump 8 can be monitored through the device status monitor 20. When the first water pump 5 fails, the second water pump 8 will start to work, so that the second water pump 8 continues to supply water to the main pipeline 1, achieving the effect of quickly switching the working water pump after the water pump fails and not shutting down the entire irrigation system when irrigation is required.

[0039] The working principle of the above embodiment is as follows: The signal processing controller 16 outputs a signal to the programmable controller 18, the programmable controller 18 outputs a signal to the frequency converter 17, the frequency converter 17 controls the first water pump 5 to work, the first water pump 5 supplies water to the main pipeline 1 through the bifurcation pipe 2, the water in the main pipeline 1 flows into the irrigation mechanism 11 through the branch pipe 10 to irrigate the crops, the flow sensor 14 detects the water flow in the branch pipe 10, and the flow sensor 14 transmits the signal to the signal processing controller 16. When the flow does not meet the irrigation requirements of the crops, the signal processing controller 16 transmits a signal to the programmable time control switch 19, and the programmable time control switch 19 adjusts the throttle valve 13, thereby adjusting the water flow in the branch pipe 10. When the first water pump 5 fails, the equipment status monitor 20 transmits a fault signal to the signal processing controller 16, and the signal processing controller 16 transmits a signal to the programmable controller 18 to make the frequency converter 17 drive the second water pump 8 to work and continue to supply water to the main pipeline 1. When the soil humidity sensor 12 detects that the soil humidity reaches the standard, it transmits a signal to the signal processing controller 16 to stop the operation of the irrigation system.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0041] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A variable-frequency speed-regulation hierarchical and zonal constant-pressure irrigation automatic control system, including a main pipeline (1), characterized in that: One end of the main pipeline (1) is connected to a bifurcated pipe (2). One side below the bifurcated pipe (2) is provided with a first pumping pipeline (4). One end of the first pumping pipeline (4) is connected to a first water pump (5). The other side below the bifurcated pipe (2) is provided with a second pumping pipeline (7). One end of the second pumping pipeline (7) is connected to a second water pump (8). One side of the outer surface of the middle part of the main pipeline (1) is connected to a branch pipe (10). One end of the branch pipe (10) is connected to an irrigation mechanism (11). One side of the outer surface of the middle part of the irrigation mechanism (11) is provided with a soil humidity sensor (12) through a fixing plate. One side of the main pipeline (1) is provided with a control box (15). Inside the control box (15), a signal processing controller (16) is arranged. The signal processing controller (16) is connected to the soil humidity sensor (12) through an electrical signal. Inside the control box (15), a frequency converter (17) is arranged. Inside the control box (15), a programmable logic controller (18) is arranged. Inside the control box (15), a programmable time control switch (19) is arranged. Inside the control box (15), a device status monitor (20) is arranged. A pressure gauge (9) is arranged on the main pipeline (1).

2. The automatic control system for variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation according to claim 1, wherein: One end of the first pumping pipeline (4) is connected to a first check valve (3). The first check valve (3) is connected to one end below the bifurcated pipe (2). The first pumping pipeline (4) is communicated with the bifurcated pipe (2) through the first check valve (3). The flow direction of the first check valve (3) is set unidirectionally.

3. The automatic control system for variable-frequency speed-regulation hierarchical and zonal constant-pressure irrigation according to claim 1, characterized in that: One end of the second pumping pipeline (7) is connected to a second check valve (6). The second check valve (6) is connected to one end below the bifurcated pipe (2). The second pumping pipeline (7) is communicated with the bifurcated pipe (2) through the second check valve (6). The flow direction of the second check valve (6) is set unidirectionally.

4. The automatic control system for variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation according to claim 1, wherein: A throttle valve (13) is arranged in the middle of the branch pipe (10). The throttle valve (13) is located at the front end of the flow sensor (14).

5. The automatic control system for variable-frequency speed-regulation hierarchical and zonal constant-pressure irrigation according to claim 1, characterized in that: A flow sensor (14) is arranged in the middle of the branch pipe (10). The flow sensor (14) is connected to the signal processing controller (16) through an electrical signal.

6. The automatic control system for variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation according to claim 1, characterized in that: The programmable logic controller (18) is connected to the frequency converter (17) through an electrical signal. The programmable logic controller (18) is connected to the signal processing controller (16) through an electrical signal.

7. An automatic control system for variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation according to claim 1, characterized in that: The programmable time control switch (19) is connected to the throttle valve (13) through an electrical signal. The programmable time control switch (19) is connected to the signal processing controller (16) through an electrical signal.

8. The automatic control system for variable-frequency speed-regulating hierarchical and zonal constant-pressure irrigation according to claim 1, wherein: The device status monitor (20) is connected to the first water pump (5) and the second water pump (8) through electrical signals. The device status monitor (20) is connected to the signal processing controller (16) through an electrical signal. The first water pump (5) and the second water pump (8) are connected to the frequency converter (17) through electrical signals.

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