CN115005060B - A solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage - Google Patents

Abstract

The invention discloses a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage, which is composed of a water supply and energy supply module, a cycle pulse module, a standardized spraying module and a digital transmission module. When the light intensity changes with time, the output power of the solar panel changes, which affects the efficiency of the pump to lift water to the water-air tank, but only changes the water filling time. During the filling process of the water-gas tank, the pressure inside the tank increases to the pressure switch setting When the value is fixed, the signal is transmitted to the solenoid valve to achieve standardized and stable spraying. Pressure sensors are installed at the tank body and nozzle, and the electronic scale at the bottom of the tank body records the weight of the water sprayed and filled. These real-time data are passed through the acquisition module and digital transmitter. After being transmitted to the computer, the present invention not only saves resources to achieve stable spraying, but also can adjust the microclimate in the field.

Description

A solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage

technical field

The invention belongs to the technical field of agricultural sprinkler irrigation equipment, in particular to a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage.

Background technique

In recent years, solar photovoltaic water pumping irrigation has been widely used around the world. The more common mode is photovoltaic water pumping to high-level pools for energy storage, combined with drip irrigation or infiltration irrigation for irrigation operations, which has a good water-saving and energy-saving effect. The Chinese patent application number is 201310299986.2, and the name is a solar sprinkler irrigation system for omnidirectional sprinkler irrigation. It discloses a power supply system composed of a solar cell array and a battery pack to supply energy to the sprinkler irrigation pump, and the purpose of saving energy is achieved through energy-saving equipment. The working pressure of traditional sprinkler irrigation is high, and the output power of the water pump is required to be large, resulting in a large number of solar panels required by the photovoltaic system and a large investment; in addition, because the output power of solar panels is affected by changes in solar irradiance, the output power is unstable, and the application It is necessary to match the storage battery to improve the power supply guarantee rate, which further increases the investment of photovoltaic system. The Chinese patent application number is 201620489833.3, and the name is a translational solar sprinkler irrigation machine. It discloses another kind of solar energy and the electric energy output by the generator to drive the translational solar sprinkler irrigation machine. In terms of solar sprinkler irrigation, the principle is to use solar energy to meet The power demand for the unit's walking is met, and the traditional energy is still used for the working pressure of the nozzle. The Chinese patent application number is 201710035549.8, which is called a solar automatic intermittent sprinkler irrigation control method and its device. It discloses a kind of electric energy output by the solar panel to supply the energy storage unit for charging, and the switch is triggered when the voltage of the energy storage unit reaches the preset value. The control circuit drives the opening and closing of the solenoid valve, which simplifies the control means and facilities of the current sprinkler irrigation device and saves resources, but the sprinkler irrigation itself still uses traditional energy. Therefore, there is no relevant research report on the system of spraying irrigation with medium and high pressure nozzles through solar water lifting.

Low-pressure sprinkler irrigation is the mainstream trend in the development of the current international sprinkler irrigation field. Its main purpose is to reduce the energy consumption of sprinkler irrigation systems. However, low-pressure sprinkler irrigation has insufficient water flow fragmentation, which leads to concentrated water distribution, surface runoff and soil erosion. However, for using solar energy as the source of water-lifting power, realizing stable and controllable medium-high pressure sprinkler irrigation has more economic value and application significance.

Contents of the invention

In view of the problems and deficiencies in the above-mentioned prior art, the object of the present invention is to provide a solar cycle pulse irrigation device coupled with compressed air energy storage, which uses solar energy as the only power source for water extraction, does not require battery energy storage, and simultaneously realizes A cycle pulse sprinkler irrigation device with stable and controllable spraying quality.

In order to achieve the above goals, the present invention adopts the following technical solutions: a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage, which is composed of a cycle pulse module, a standardized spray module, a water supply module and a digital transmission module;

The water supply and energy supply module is composed of a water tank, a DC diaphragm high-pressure pump and a solar panel;

The cycle pulse module is composed of a pressure switch, a solenoid valve and a delay relay;

The standardized spraying module is composed of a spray head and a water and air tank;

The digital transmission module is composed of a digital acquisition terminal computer, a first digital signal pressure transmitter, a second digital signal pressure transmitter, an electronic scale, a digital transmitter and an analog acquisition unit;

The solar panel directly supplies energy for the DC diaphragm high-pressure pump, and the water inlet and outlet of the DC diaphragm high-pressure pump are respectively connected with the water inlets of the water tank and the water-air tank; the top of the water-gas tank has a screw hole, and a second Digital signal pressure transmitter, with a screw hole in the middle of the side wall, a pressure switch installed, a water outlet hole in the lower part of the side wall, connected to the nozzle installed on the nozzle bracket through the water pipeline, and a drainage hole at the bottom; The pressure switch is connected to the solenoid valve through a delay relay; the water and gas tank is placed on an electronic scale, and the electronic scale is connected to the digital acquisition terminal computer through a digital transmitter, and the digital acquisition terminal computer is connected to the analog quantity acquisition unit connected; the analog acquisition unit is respectively connected with the first digital signal pressure transmitter, the second digital signal pressure transmitter, the pressure transmitter and the current transmitter; the solenoid valve and the first digital signal pressure The transmitter is installed on the spray head; the pressure transmitter and the current transmitter are connected with the solar panel.

An electronic flowmeter and a second anti-seismic pressure gauge are installed on the pipeline connecting the DC diaphragm high-pressure pump and the water and air tank. The first anti-seismic pressure gauge is installed on the nozzle.

The pressure switch is a micro pressure adjustable mechanical automatic normally open pressure switch with a pressure adjustment range of 0.1-1.0 MPa.

The solenoid valve is a DC24V energy-saving and non-heating solenoid valve.

The delay relay adopts DC24V voltage, and the delay range is 0.5-5s.

The nozzle is a medium-pressure full-circle sprinkler rocker nozzle.

The water and gas tank is a 30L cylindrical gas storage device made of carbon steel, with an explosion-proof grade of 1.25MPa.

The DC water pump is a DC24V high-pressure diaphragm pump with a maximum lift of 100m and a flow rate of 30L/min.

Compared with the prior art, a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention has the following beneficial effects:

1. The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention, compared with the traditional solar sprinkler irrigation device, has a large difference in the utilization of solar energy. The DC diaphragm high-pressure pump first injects water into the water-gas tank, and the tank The air is compressed at the same time, and only when the pressure potential energy of the compressed air reaches the uniform set value, the pressure switch will trigger the solenoid valve to open and spray, which ensures that the water volume and water distribution of the nozzle are the same every time, thus avoiding Influence of photovoltaic output fluctuation on spraying quality.

2. The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention, the sprinkler intensity is not higher than 1mm/h, it is suitable for irrigation of all types of soil without runoff and erosion, the spraying water is evenly distributed, and the combined spraying uniformity coefficient Not less than 85%, high irrigation water use efficiency.

3. The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention can keep the soil and microclimate moist for a long time, and provide a beneficial environment for crop growth.

4. The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention can effectively reduce the size and specification of irrigation system pipelines and reduce system investment.

5. The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention is suitable for remote sprinkler irrigation areas lacking in electricity, especially to provide an economical, energy-saving and environmentally friendly efficient water-saving irrigation device for agricultural production irrigation on slope farmland, which meets the requirements of Current status of irrigation demand in my country.

Description of drawings

Fig. 1 is the structural representation of sprinkler irrigation device of the present invention;

Fig. 2 is the working mechanism schematic diagram of sprinkler irrigation device of the present invention;

Fig. 3 is the valve control schematic diagram of sprinkler irrigation device of the present invention;

Fig. 4 is a schematic diagram of the sprinkling cycle of the sprinkler irrigation device of the present invention;

Fig. 5 is the water-air tank weight change figure of sprinkler irrigation device of the present invention;

Fig. 6 is the cyclic variation diagram of water-air tank pressure and nozzle pressure of sprinkler irrigation device of the present invention;

Fig. 7 is the change process diagram of the pressure release of the single-cycle water and air tank collected by the sprinkler irrigation device of the present invention at a high speed;

Fig. 8 is a high-speed acquisition single-cycle nozzle pressure change process diagram of the sprinkler irrigation device of the present invention;

Fig. 9 is a schematic diagram showing the comparison between the water volume distribution of the solar cycle pulse spraying of the present invention and the conventional solar continuous spraying water volume distribution.

The numbers in the figure represent: 1 solar panel, 2 DC diaphragm high-pressure pump, 3 water tank, 4 water and gas tank, 5 pressure switch, 6 solenoid valve, 7 nozzle, 8 delay relay, 9 nozzle bracket, 10 first digital signal pressure Transmitter, 11 the first seismic pressure gauge, 12 the second digital signal pressure transmitter, 13 electronic scale, 14 multi-channel digital transmitter, 15 pressure transmitter, 16 current transmitter, 17 data terminal computer, 18 electronic flowmeter, 19 second seismic pressure gauge, 20 analog acquisition module.

Detailed ways

Referring to Figure 1, a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage is composed of a water supply module, a cycle pulse module, a standardized spray module and a digital transmission module.

The water supply and energy supply module is composed of a water tank 3 , a DC diaphragm high-pressure pump 2 and a solar panel 1 .

The cycle pulse module is composed of a pressure switch 5 , a solenoid valve 6 and a delay relay 8 .

The standardized spraying module is composed of a spray head 7 and a water and air tank 4 .

The digital transmission module is composed of a digital acquisition terminal computer 17 , a first digital signal pressure transmitter 10 , a second digital signal pressure transmitter 12 , an electronic scale 13 , a digital transmitter 14 and an analog quantity acquisition unit 20 .

The solar panel 1 directly supplies energy for the DC diaphragm high-pressure pump 2, and the water inlet and outlet of the DC diaphragm high-pressure pump 2 are respectively connected with the water inlets of the water tank 3 and the water-air tank 4; the top of the water-gas tank 4 is provided with a screw hole, a second digital signal pressure transmitter 12 is installed, a screw hole is opened in the middle of the side wall, a pressure switch 5 is installed, and a water outlet hole is provided at the lower part of the side wall, through the water pipeline and the nozzle bracket 9 The nozzle 7 is connected, and the bottom is provided with a drainage hole; the pressure switch 5 is connected to the electromagnetic valve 6 through a delay relay 8; the water and gas tank 4 is placed on an electronic scale 13, and the electronic scale 13 is connected to The data acquisition terminal computer 17 is connected, and the said data acquisition terminal computer 17 is connected with the analog quantity acquisition unit 20; the said analog quantity acquisition unit 20 is respectively connected with the first digital signal pressure transmitter 10 and the second digital signal pressure transmitter 12 , the pressure transmitter 15 and the current transmitter 16 are connected; the solenoid valve 6 and the first digital signal pressure transmitter 10 are installed on the nozzle 7; the pressure transmitter 15 and the current transmitter 16 are connected with the Solar panel 1 connection.

An electronic flowmeter 18 and a second anti-seismic pressure gauge 19 are installed on the pipeline connecting the DC diaphragm high-pressure pump 2 and the water-gas tank 4 .

A first anti-seismic pressure gauge 11 is installed on the spray head 7 .

The pressure switch 5 is a micro-pressure adjustable mechanical automatic normally-open pressure switch with a pressure adjustment range of 0.1-1.0 MPa.

The solenoid valve 6 is a DC24V energy-saving and non-heating solenoid valve.

The delay relay 8 adopts DC24V voltage, and the delay range is 0.5-5s.

The nozzle 7 is a medium-pressure full-circle sprinkler rocker nozzle.

The water and gas tank 4 is a 30L cylindrical gas storage device made of carbon steel, with an explosion-proof grade of 1.25MPa.

The DC diaphragm high-pressure pump 2 is a DC24V high-pressure diaphragm pump with a maximum lift of 100m and a flow rate of 30L/min.

The external power supply provides power to the voltage transmitter, current transmitter, analog acquisition module, delay relay, solenoid valve, and digital transmitter.

The cycle pulse system of the solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage in the present invention: when working, the solar panel 1 absorbs light energy and converts it into electric energy, and provides electric energy for the DC film high-pressure pump 2 to lift water from the water tank 3, and the water flow From the water tank 3, flow through the electronic flowmeter 18 (to record the flow of the hourly section) through the DC membrane high-pressure pump 2, and flow through the pressure gauge 19 (for monitoring the pressure in the water and gas tank, to adjust the value of the pressure switch) will The water flow is passed to the water-gas tank 4, the gas in the water-gas tank 4 is gradually compressed by the water flow filled in, and the pressure in the water-gas tank 4 gradually rises. When the pressure of the water-gas tank 4 reaches the preset value of the pressure switch 5, the pressure The switch 5 is connected to the solenoid valve 6 at the nozzle 7 and the delay relay 8. The water flow is transmitted to the solenoid valve 6 through the 4-point PE pipe. The solenoid valve 6 controlled by the pressure switch 5 is opened, and the nozzle 7 sprays water instantly. The delay relay 8. By controlling the opening and closing cycle of the solenoid valve 6, the spraying time of the nozzle 7 is controlled. When the delay relay 8 reaches the preset time, the solenoid valve 6 is closed, and the spraying process is completed. Fill with water and enter the next cycle.

In a sprinkling irrigation cycle, the solar panel 1 directly provides electric energy to the DC diaphragm high-pressure pump 2, and fills the water-air tank 4 with water for a relatively long time to compress the air in the tank and increase the air pressure potential energy. 4. After the internal pressure reaches the preset pressure, the pressure switch 5 sends an opening signal to the solenoid valve 6, and the nozzle 7 sprays accordingly. When the opening time is extended to the preset time of the delay relay 8, the solenoid valve 6 is closed, and the jet flow of the nozzle 7 stops. After one sprinkling irrigation is completed, the water and gas tank 4 enters the next energy storage cycle, and the water and gas tank 4 of the energy storage unit stores pressure again and enters the next cycle.

The operating efficiency of the DC diaphragm high-pressure pump 2 only changes the length of time it takes to fill the water-air tank with water.

The output current and voltage of the solar panel 1 determines the operating efficiency of the DC diaphragm high-pressure pump 2 .

The voltage value of the DC diaphragm high-pressure pump 2 of the control energy storage unit matches the voltage value of the preset trigger pressure switch 5 and the rated voltage value of the solenoid valve 6 .

The data transmission system of the solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention: the solar panel 1 is connected to the pressure transmitter 15 and the current transmitter 16 (for collecting the solar panel with the change of the solar irradiance in one day) current and voltage output), the pressure sensor 12 on the water gas tank and the pressure sensor 10 on the nozzle (for real-time recording of the pressure change of the water gas tank and nozzle boosting and pressure relief) pass through the analog quantity acquisition module 20 through 485 Transfer to the USB interface and transfer to the computer data terminal. The electronic flow meter 18 is used to record the flow passing through each hour, and transmit it to the data terminal through the 485-turn USB interface, and record the water passing through the hour through the debugging package. An electronic scale 13 is placed at the bottom of the water and air tank, and the digital transmitter 14 is transmitted to the data acquisition terminal through a 485-speed USB interface to record the changes of water filling and spraying water volume.

Referring to Figure 2, a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage is mainly composed of a water tank 3, and a DC diaphragm high-pressure pump 2 delivers water to the water-air tank 4 to meet the pressure set by the water-air tank 4 upper limit, the electromagnetic valve 6 is opened instantly, and the water flow realizes pulse spraying. The device mainly fills the water-air tank 4 with water and compresses the air to store energy until the set pressure upper limit is reached. The water flow is sprayed by the nozzle 7 in pulses to release energy. At this time, the DC film high-pressure pump 2 continues to fill the water-air tank 4 with water. 7. For the intermittent period, enter the next cycle when the water-air tank 4 reaches the set pressure upper limit again.

Referring to Figure 3, a valve control schematic diagram of a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage, X000 pressure switch 5 controls Y001 solenoid valve 6, and the opening and closing time of Y001 solenoid valve 6 is controlled by T delay relay 8. When the opening time of Y001 solenoid valve 6 reaches the set value of T delay relay 8, Y001 is finally closed.

Referring to Figure 4, a schematic diagram of the spraying cycle of a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage, the water filling time is much longer than the water spraying time.

Referring to Fig. 5, a diagram of the weight change of the water-air tank 4 of a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage, when the water flow is filled into the water-air tank 4 and the compressed air energy is stored in the water-air tank 4, when the preset upper limit of the pressure of the water-air tank 4 is reached , the water flow is ejected in the form of pulses, and the weight of the water-air tank 4 decreases. At this time, the DC film high-pressure pump 2 continues to fill the water-air tank 4 with water and enters the next cycle.

Referring to Fig. 6, a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage shows a cycle change diagram of the pressure of the water-air tank and the pressure of the nozzle. When the upper pressure limit is reached, the pressure of the nozzle 7 also reaches the highest point, the solenoid valve 6 is opened, and the water flow is ejected in pulse form. The pressure of the nozzle 7 and the pressure of the water and air tank 4 decrease. Fill water into the next cycle.

Referring to Fig. 7, a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage is a high-speed collection single-cycle water-air tank 4 pressure relief process diagram, and the pressure of the water-air tank 4 drops in the form of a quadratic function.

Referring to Figure 8, a solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage collects the pressure change diagram of single-cycle nozzle 7 at high speed.

Referring to Figure 9, a schematic diagram of the comparison between the water volume distribution of solar cycle pulse spraying and the conventional solar continuous spraying water volume distribution. This figure shows the water volume distribution diagram of the solar cycle pulse device under three groups of different output powers. Low, the hydraulic performance is significantly improved. However, under the continuous spraying of conventional solar energy, it has a higher flow rate and a lower working pressure, the water flow cannot be fully broken, and the peak value of the sprinkler irrigation intensity is too high.

The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention is suitable for remote sprinkler irrigation areas lacking in electricity. Its main working principle is that the gas in the water gas tank 4 is gradually compressed as the amount of water filled increases. , the electromagnetic valve 6 always uses the set value of the pressure switch 5, that is, the water is discharged at the rated pressure value, and the change of the solar irradiance will only change the water filling efficiency of the DC diaphragm high-pressure pump 2 to the water gas tank 4 (water filling time ), the hydraulic performance of the nozzle 7 will not change with the solar irradiance.

The solar cycle pulse sprinkler irrigation device coupled with compressed air energy storage of the present invention uses clean energy solar energy to effectively reduce system energy consumption and greenhouse gas emissions. At the same time, the sprinkler head can spray under medium and high pressure water heads, which can avoid the broken water flow in low-pressure sprinkler irrigation. sufficient phenomenon to reduce surface runoff and soil erosion; the pulse spray mode can further reduce the average sprinkler intensity of the device, effectively improving the applicability of sprinkler irrigation on slopes and viscous soil irrigation; in addition, the device has a larger range, which can reduce field pipe Reduce road usage and reduce system investment.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications and equivalent replacements made by utilizing the sprinkler irrigation device coupled with compressed air energy storage and supercharging , improvements, etc., should be included within the protection scope of the present invention.

Claims (9)

1. The solar energy circulation pulse sprinkling irrigation device for coupling the compressed air energy storage is characterized by comprising a water supply and energy supply module, a circulation pulse module, a standardized sprinkling module and a digital transmission module;

the water supply and energy supply module consists of a water tank (3), a direct-current film high-pressure pump (2) and a solar panel (1);

the circulating pulse module consists of a pressure switch (5), an electromagnetic valve (6) and a delay relay (8);

the standardized spraying module consists of a spray head (7) and a water-air tank (4);

the digital transmission module consists of a data acquisition terminal computer (17), a first digital signal pressure transmitter (10), a second digital signal pressure transmitter (12), an electronic scale (13), a digital transmitter (14) and an analog acquisition unit (20);

the solar panel (1) directly supplies energy to the direct-current film high-pressure pump (2), and water inlets and water outlets of the direct-current film high-pressure pump (2) are respectively communicated with water inlets of the water tank (3) and the water tank (4); the top end of the water-gas tank (4) is provided with a screw hole, a second digital signal pressure transmitter (12) is installed, the middle part of the side wall is provided with a screw hole, a pressure switch (5) is installed, the lower part of the side wall is provided with a water outlet hole, the water outlet hole is connected with a spray head (7) installed on a spray head bracket (9) through a water pipeline, and the bottom is provided with a water outlet hole; the pressure switch (5) is connected with the electromagnetic valve (6) through the delay relay (8); the water-gas tank (4) is arranged on the electronic scale (13), the electronic scale (13) is connected with the data acquisition terminal computer (17) through the digital transmitter (14), and the data acquisition terminal computer (17) is connected with the analog quantity acquisition unit (20); the analog quantity acquisition unit (20) is respectively connected with the first digital signal pressure transmitter (10), the second digital signal pressure transmitter (12), the pressure transmitter (15) and the current transmitter (16); the electromagnetic valve (6) and the first digital signal pressure transmitter (10) are arranged on the spray head (7); the pressure transmitter (15) and the current transmitter (16) are connected with the solar panel (1).

2. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: an electronic flowmeter (18) and a second anti-vibration pressure gauge (19) are arranged on a pipeline connected with the water-air tank (4) through the direct-current film high-pressure pump (2).

3. The solar circulating pulse sprinkler device for coupling compressed air energy storage according to claim 1, wherein a first shock-resistant pressure gauge (11) is installed on the sprinkler head (7).

4. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: the pressure switch (5) is a micro-pressure adjustable mechanical automatic normally open type pressure switch, and the pressure adjustment range is 0.1-1.0MPa.

5. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: the electromagnetic valve (6) is a DC24V energy-saving non-heating electromagnetic valve.

6. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: the delay relay (8) adopts DC24V voltage, and the delay range is 0.5-5s.

7. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: the spray head (7) is a medium-pressure full-round spray rocker arm type spray head.

8. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: the water-gas tank (4) is a cylindrical gas storage device made of carbon steel 30L, and the explosion-proof level is 1.25MPa.

9. The solar circulating pulse sprinkler device coupled with compressed air energy storage according to claim 1, wherein: the direct-current film high-pressure pump (2) is a DC24V high-pressure diaphragm pump, the maximum lift is 100m, and the flow is 30L/min.

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