Water and electricity combined control complete equipment for agricultural irrigation

Abstract

The invention relates to water and electricity combined control complete equipment for agricultural irrigation, and belongs to the technical field of agricultural irrigation. The equipment comprises electric energy meters which are sequentially connected in series on a water pump power supply line for supplying power to a water pump motor and are used for communicating with a management system; a water meter for metering the irrigation water amount is connected in series to the water pump pipeline and communicates with the management system; the management system is used for calculating the total electricity consumption of the water pump motor according to the total water purchase amount of the farmer after the farmer purchases water, and stopping supplying power to the water pump power supply line when the irrigation water amount obtained according to the water meter is equal to the total water purchase amount; and if the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption, reporting an error. The total electricity consumption of the water pump motor is calculated according to the total water purchase amount, the total electricity consumption is increased as a reference amount, an error is reported when the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption, the irrigation water amount of farmers can be accurately controlled, and waste of water resources is reduced.

Description

Technical Field

[0001] The invention relates to a complete set of water and electricity combined control equipment for agricultural irrigation, belonging to the technical field of agricultural irrigation. Background Art

[0002] At present, water charges are collected based on the amount of water used in agricultural irrigation, and the state has clearly proposed that according to the requirements of "one pump, one meter, one household, one card", IC cards can only be installed for metering and implementation, and agricultural irrigation is carried out according to the water volume and water fee, and the policy of "first recharge to pay the water fee, then swipe the card to draw water for irrigation" is implemented. However, due to technical and conditional limitations, most water metering control devices directly connect the control terminal to the water user's starting cabinet for control, which makes it easy for users to change the line, remove the line or create faults, making it impossible for the equipment to accurately control the water consumption, resulting in a waste of water resources. Summary of the invention

[0003] The purpose of the present invention is to provide a complete set of water and electricity combined control equipment for agricultural irrigation, so as to solve the problem of inaccurate water consumption control and waste of water resources in agricultural irrigation in the prior art.

[0004] To achieve the above object, the solution of the present invention includes:

[0005] The water-electricity combined control complete set for agricultural irrigation of the present invention comprises: an electric energy meter connected in series in sequence to a water pump power supply line for powering a water pump motor, the electric energy meter being used to communicate with a management system; a water meter for measuring irrigation water volume connected in series on a water pump pipeline, the water meter being used to communicate with a control management system;

[0006] The management system is used to calculate the total electricity consumption of the water pump motor according to the total amount of water purchased by the farmers after they purchase water. When the irrigation water volume obtained according to the water meter is equal to the total amount of water purchased, the power supply to the water pump power supply line is stopped; if the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption at this time, an error is reported.

[0007] Furthermore, the total electricity consumption of the water pump motor is calculated based on the total amount of water purchased by farmers, including:

[0008] The total amount of electricity consumption is obtained based on the total amount of water purchased and the pre-obtained water-to-electricity conversion coefficient;

[0009] The water-to-electricity conversion factor is obtained based on the electricity consumption per unit of water drawn.

[0010] Furthermore, a first circuit breaker controlled by the management system is connected in series to the water pump power supply line, and the power supply to the water pump power supply line is stopped by controlling the first circuit breaker to open.

[0011] Furthermore, a manually operated second circuit breaker is connected in series to the water pump power supply circuit.

[0012] Furthermore, the first circuit breaker is connected in series between the electric energy meter and the water pump motor; and the second circuit breaker is connected in series upstream of the electric energy meter.

[0013] Furthermore, it also includes: a surge protection circuit connected at the connection point between the second circuit breaker and the electric energy meter, for protecting the water and electricity combined control equipment used for agricultural irrigation.

[0014] Furthermore, the surge protection circuit includes: a surge protector and a grounding protection conductor connected in series in sequence.

[0015] Furthermore, the surge protection circuit also includes: a fuse for protecting the surge protection circuit.

[0016] Furthermore, the management system is also used to supply power to the water pump power supply line by controlling the closing of the first circuit breaker after the farmer purchases water.

[0017] The beneficial effects of the present invention are as follows: as a pioneering invention, the present invention allows the electric energy meter to communicate with the management system by connecting an electric energy meter in series on the water pump power supply line for powering the water pump motor; a water meter for measuring the amount of irrigation water is connected in series on the water pump pipeline to allow the water meter to communicate with the management system; the management system is used to calculate the total amount of electricity used by the water pump motor according to the total amount of water purchased by the farmer after the farmer purchases water, and when the amount of irrigation water obtained according to the water meter is equal to the total amount of water purchased, stop supplying power to the water pump power supply line; if the amount of electricity measured by the electric energy meter is not equal to the total amount of electricity at this time, an error is reported. By calculating the total amount of electricity used by the water pump motor through the total amount of water purchased, adding the total amount of electricity used as a reference amount, and reporting an error when the amount of electricity measured by the electric energy meter is not equal to the total amount of electricity used, the amount of irrigation water for farmers can be accurately controlled to reduce the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an existing pump-well water and electricity dual control control system;

[0019] Figure 2 It is a specific structural diagram of an existing pump-well water-electricity dual control control system;

[0020] Figure 3 It is a structural schematic diagram of a complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention;

[0021] Figure 4 It is a structural schematic diagram of a hydropower combined control box provided by an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the electrical principle of a complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention;

[0023] Figure 6The present invention provides a flowchart of a complete set of water and electricity combined control equipment for agricultural irrigation. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] An embodiment of a complete set of water and electricity combined control equipment for agricultural irrigation:

[0026] Due to technical and conditional limitations, most water metering control devices connect the control terminal directly to the water user's starting cabinet for control, which makes it easy for users to change the line, remove the line or create faults, making the equipment unable to accurately control water consumption, resulting in waste of water resources.

[0027] The Chinese utility model patent application document with the authorization announcement number CN209690761U discloses a pump-well water-electricity dual control control system, such as Figure 1 and Figure 2 As shown. The control system installs the machine well dual control control box on the high-voltage side of the transformer, connects to any phase of the three-phase high-voltage line through the PT power supply module, connects the machine well dual control control box to the PT power supply module to obtain external power supply, and the input end of the electric energy metering signal voltage regulator module is respectively connected to the three-phase PT and the three-phase CT, and the three-phase secondary voltage signal output by the three-phase PT and the three-phase secondary current signal output by the three-phase CT are respectively input into the electric energy metering signal voltage regulator module, where the electric energy metering signal voltage regulator module is used to realize the lightning protection, isolation and signal conditioning of the electric energy metering signal; the high-voltage circuit breaker opening and closing drive board is connected to the high-voltage vacuum circuit breaker to obtain the 110V control DC voltage, and obtain the power required for the normal opening and closing of the high-voltage circuit breaker. The water pump is connected to the three-phase step-down transformer through the water pump start-stop switch to obtain three-phase electricity to ensure the normal operation of the water pump. The Chinese utility model with authorization announcement number CN209690761U completely solves the impact of water and electricity theft (water and electricity out of control) and water and electricity failures in pump stations on the water and electricity dual control system by isolating the machine well dual control control box from the original low-voltage secondary electrical control circuit, clarifies the responsibilities and rights of the circuit, and at the same time improves the level of responsibility for water and electricity dual control. The processor sends the acquired electricity and water data to the remote control center through the communication module for maintenance personnel to view remotely. However, the control system does not couple the electricity and water data. It is monitored by maintenance personnel, and there will still be problems with inaccurate control of farmers' water consumption during agricultural irrigation.

[0028] The idea of ​​the present invention is to connect an electric energy meter in series on the water pump power supply line for powering the water pump motor, so that the electric energy meter communicates with the management system; a water meter for measuring the amount of irrigation water is connected in series on the water pump pipeline, so that the water meter communicates with the management system; the management system is used to calculate the total amount of electricity used by the water pump motor according to the total amount of water purchased by the farmer after the farmer purchases water, and when the amount of irrigation water obtained according to the water meter is equal to the total amount of water purchased, stop supplying power to the water pump power supply line; if the amount of electricity measured by the electric energy meter is not equal to the total amount of electricity at this time, an error is reported. By calculating the total amount of electricity used by the water pump motor through the total amount of water purchased, adding the total amount of electricity used as a reference amount, and reporting an error when the amount of electricity measured by the electric energy meter is not equal to the total amount of electricity used, the amount of irrigation water of the farmer can be accurately controlled to reduce the waste of water resources.

[0029] Combine the following Figure 3-Figure 6 A complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention is introduced in detail.

[0030] Figure 3 FIG. 1 is a schematic diagram of a complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention. Figure 3 As shown, the water-electricity combined control equipment includes: an electric energy meter 8 connected in series on a water pump power supply line for powering a water pump motor of a water pump WP, and the electric energy meter 8 is used to communicate with a management system; a water meter LX for measuring irrigation water volume is connected in series on a water pump pipeline of the water pump WP, and the water meter LX communicates with the management system.

[0031] The management system is used to calculate the total electricity consumption of the water pump motor according to the total amount of water purchased by the farmers after they purchase water. When the irrigation water volume obtained according to the water meter is equal to the total amount of water purchased, the power supply to the water pump power supply line is stopped; if the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption at this time, an error is reported.

[0032] Among them, the voltage supplied on the water pump power supply line is low voltage. As an optional implementation, it can be connected to the power supply line after the step-down transformer, and the step-down transformer can step down the voltage on the high-voltage line before supplying power to the water pump WP; as another optional implementation, a voltage power supply can be directly connected to supply power to the water pump WP, etc. The present invention does not make any special restrictions on this, and the following takes directly connecting a voltage power supply to supply power to the water pump WP as an example for exemplary description. Among them, the present invention does not make any special restrictions on the power supply capacity of the low-voltage power supply, and the following takes the low-voltage power supply as a 0.4 kilovolt (KV) grid power supply as an example for exemplary description.

[0033] Using low-voltage power supply can reduce the risk of electric shock, high temperature, equipment damage, fire, leakage, operator accidental touch, and high operation and maintenance costs caused by high-voltage power supply.

[0034] The water meter LX can be located on the downstream water pump pipeline of the water pump LX, or on the upstream water pump pipeline of the water pump LX. The present invention does not specifically limit this. The following takes the case where the water meter LX can be located on the downstream water pump pipeline of the water pump LX as an example for exemplary description. The water meter LX can be a smart water meter that can measure the irrigation water volume of farmers during irrigation, and can upload the irrigation water volume to the management system through the wireless communication module to communicate with the management system.

[0035] Among them, the power meter 8 can be a smart power meter, which can measure the electricity consumption of farmers during irrigation, and can upload the electricity consumption to the management system through the wireless communication module. The management system can control the power meter 8 to start and stop measuring through the control terminal 1.

[0036] The wireless communication module may be a Bluetooth module or a WiFi module, etc. The present invention does not specifically limit this and can be selected according to actual needs.

[0037] Among them, the management system can receive and record the total amount of water purchased by farmers, the amount of irrigation water sent by the water meter LX, the amount of electricity consumed by farmers during irrigation uploaded by the electric energy meter 8, the pumping information of the water pump LX during irrigation, the water situation information of the machine well, the intelligent switch information, the working status and other related data. In the case of circuit breakers, the operation of related equipment such as the opening and closing of each circuit breaker can be controlled, which is conducive to the digitalization and intelligence of agricultural water use.

[0038] The total electricity consumption of the water pump motor is calculated based on the total amount of water purchased by the farmers, including: the total electricity consumption is obtained based on the total amount of water purchased and the pre-obtained water-to-electricity conversion coefficient, which can be specifically referred to in the following formula (1):

[0039]

[0040] Among them, Q is the total amount of water purchased by farmers, in m 3 ; K is the hydropower conversion coefficient, unit is m 3 / (kWh); M is the cost of purchasing electricity, in Yuan; N is the unit price of electricity, in Yuan / kWh.

[0041] The water-to-electricity conversion coefficient K can be obtained based on the power consumption per unit of water consumption. Specifically, the following formula (2) can be used:

[0042]

[0043] Among them, η is the power supply efficiency per unit time, which is less than 1; Q t is the unit pumping volume, the value is 1, the unit is m 3 ; E tIt is the power consumption of the water pump WP when pumping unit water volume, in kWh.

[0044] The calculation of the water-to-electricity conversion coefficient K is to install a water metering device at a suitable location of the farm well outlet to monitor the water consumption in real time, and to connect an electric energy meter in series to the power supply line of the water pump motor to monitor the power consumption of agricultural irrigation in real time, so as to establish the relationship between unit power consumption and pumping volume. Therefore, as long as the power consumption of a typical agricultural well in a certain period of time is mastered, it can be used as the basis for estimating water consumption. By establishing a logical relationship between water volume and power consumption, the pricing and accounting can be made more scientific and accurate.

[0045] It can be understood that the total amount of electricity consumed by the water pump motor can be calculated based on the total amount of water purchased by the farmer using formula (1). When the amount of irrigation water obtained from the water meter is equal to the total amount of water purchased, within the allowable error range, the electricity consumption measured on the electric energy meter 8 will be equal to the calculated total amount of electricity consumed by the water pump motor. If the electricity consumption measured by the electric energy meter is not equal to the total amount of electricity consumed, it is considered that there may be a waste of water resources, and the management system will report an error to remind maintenance personnel to conduct inspections or repairs, so as to achieve the purpose of energy saving and consumption reduction and scientific management.

[0046] In order to enable the management system to better control the start or shut down of the water pump motor, as an optional implementation, a first circuit breaker controlled by the management system is also connected in series on the water pump power supply line, and is connected in series between the electric energy meter 8 and the water pump motor. The management system stops the power supply to the water pump power supply line by controlling the first circuit breaker to open, and powers the water pump power supply line by controlling the first circuit breaker to close.

[0047] In order to improve the participation of farmers, to facilitate farmers to control the operation of the water pump WP according to their irrigation needs, and to take into account the safety during maintenance, as an optional implementation method, a manually operated second circuit breaker is also connected in series on the water pump power supply line, and the second circuit breaker is connected in series upstream of the electric energy meter 8.

[0048] Among them, in order to reduce production costs and operation and maintenance costs, as an optional implementation method, the first circuit breaker and the second circuit breaker are both molded case circuit breakers. The difference is that the first circuit breaker is an intelligent molded case circuit breaker 6, which can communicate with the management system through a general packet radio service (General Packet Radio Service, GPRS) antenna 7, and its opening and closing is realized by the management system; the second circuit breaker is an ordinary molded case circuit breaker 3, which does not have a communication function and needs to be opened and closed manually.

[0049] It can be understood that both the intelligent molded case circuit breaker 6 and the ordinary molded case circuit breaker 3 can be used to cut off and protect electrical circuit equipment. When the circuit is overloaded or short-circuited, the circuit can be quickly cut off to avoid safety hazards and losses caused by circuit overload, short circuit and other faults.

[0050] In order to reduce the damage to the electrical circuit caused by surge phenomena due to indirect lightning or direct lightning or other transient overvoltage, as an optional implementation, a surge protection circuit is connected at the connection point between the ordinary molded case circuit breaker 3 (i.e., the second circuit breaker) and the electric energy meter 8.

[0051] The surge protection circuit includes a surge protector 4 and a grounding protection conductor connected in series. In order to improve the reliability of protection, the grounding protection conductor can be a PE copper bus 3.

[0052] In order to reduce the damage to the surge protection circuit due to the occurrence of short circuit or overcurrent, as an optional implementation, the surge protection circuit also includes: a fuse 2 is connected in series between the connection point between the ordinary molded case circuit breaker 3 and the electric energy meter 8 and the surge protector 4.

[0053] As an optional implementation method of the embodiment of the present invention, an ordinary molded case circuit breaker 3, an electric energy meter 8, an intelligent molded case circuit breaker 6, a control terminal 1, a GPRS antenna 7, a fuse 2, a surge protector 4 and a PE copper bus 5 can be arranged in a water and electricity combined control box, which can facilitate on-site installation, reduce damage to various equipment caused by natural environmental factors, and improve the service life of various equipment.

[0054] Specifically, please refer to Figure 4 , Figure 4 Schematic diagram of a hydropower combined control box provided by an embodiment of the present invention. Figure 4 As shown, the hydropower combined control box includes a box body and a GPRS antenna 7 arranged on the side wall of the box body, and the box body is provided with a control terminal 1, a fuse 2, an ordinary molded case circuit breaker 3, a surge protector 4, a PE copper bus 5, an intelligent molded case circuit breaker 6 and an electric energy meter 8.

[0055] Among them, the control terminal 1 and the electric energy meter 8 are arranged in the upper part of the box, the fuse 2, the ordinary molded case circuit breaker 3, the surge protector 4 and the intelligent molded case circuit breaker 6 are all arranged in the lower part of the box, and the PE copper busbar 5 is arranged at the bottom of the box.

[0056] For the connection relationship between the control terminal 1, fuse 2, ordinary molded case circuit breaker 3, surge protector 4, PE copper bus 5, intelligent molded case circuit breaker 6 and electric energy meter 8 in the box, please refer to Figure 5 .

[0057] Figure 5FIG. 1 is a schematic diagram of the electrical principle of a complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention. Figure 5 As shown, one end of the common molded case circuit breaker 3 is used to connect to the 0.4KV grid power supply, and the other end is connected to the intelligent molded case circuit breaker 6 through the electric meter 8. The other end of the intelligent molded case circuit breaker 6 is used to connect to the water pump WP. A fuse 2 is also connected to the connection point between the common molded case circuit breaker 3 and the electric energy meter 8, and the other end of the fuse 2 is connected to the PE copper bus 5 through the surge protector 4. A water meter LX is connected in series to the water pump pipeline of the water pump WP for irrigation of farmland.

[0058] Combine the following Figure 6 , illustrating the working principle of a complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention.

[0059] Figure 6 FIG. 1 is a flow chart of a complete set of water and electricity combined control equipment for agricultural irrigation provided by an embodiment of the present invention. Figure 6 As shown, after the farmer purchases water, the management system receives the farmer's water purchase information, calculates the total electricity consumption of the water pump motor according to the total amount of water purchased by the farmer, controls the intelligent circuit breaker to close, starts the water pump, and draws the total amount of water purchased from the well for the farmer's use. The electric meter starts to measure the electricity consumption during irrigation, and the water meter starts to measure the water consumption during irrigation.

[0060] Under normal circumstances, when the water consumption during rated irrigation measured by the water meter is equal to the total amount of water purchased by the farmers, within the allowable error range, the water consumption during irrigation measured by the electric meter is equal to the calculated total electricity consumption of the pump motor. At this time, the management system controls the intelligent circuit breaker to open.

[0061] In abnormal situations, for example, if farmers change the line without permission, the water consumption during irrigation measured by the electricity meter may be equal to the calculated total electricity consumption of the pump motor, but the water consumption during rated irrigation measured by the water meter is not equal to the total amount of water purchased by the farmer; or the water consumption during rated irrigation measured by the water meter is equal to the total amount of water purchased by the farmer, but the water consumption during irrigation measured by the electricity meter is not equal to the calculated total electricity consumption of the pump motor. For abnormal situations, the management system will alarm and remind the operation and maintenance personnel, who can go to the site for inspection and maintenance.

[0062] The embodiment of the present invention provides a complete set of water and electricity combined control equipment for agricultural irrigation. An electric energy meter is connected in series on the water pump power supply line for powering the water pump motor, so that the electric energy meter communicates with the management system; a water meter for measuring the amount of irrigation water is connected in series on the water pump pipeline, so that the water meter communicates with the management system; the management system is used to calculate the total amount of electricity used by the water pump motor according to the total amount of water purchased by the farmer, and when the amount of irrigation water obtained according to the water meter is equal to the total amount of water purchased, the power supply to the water pump power supply line is stopped; if the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption at this time, an error is reported. The total electricity consumption of the water pump motor is calculated by the total amount of water purchased, and the total electricity consumption is added as a reference amount. When the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption, an error is reported. Compared with the solution of judging whether there is water theft only by monitoring the water meter value, the irrigation water amount of farmers can be accurately controlled to reduce the waste of water resources.

Claims

1. A complete set of water and electricity combined control equipment for agricultural irrigation, characterized in that: include: An electric energy meter is sequentially connected in series on a water pump power supply line for powering a water pump motor, and the electric energy meter is used to communicate with a management system; a water meter for measuring irrigation water volume is connected in series on the water pump pipeline, and the water meter communicates with the management system; The management system is used to calculate the total electricity consumption of the water pump motor according to the total amount of water purchased by the farmer after the farmer purchases water. When the irrigation water volume obtained according to the water meter is equal to the total amount of water purchased, the power supply to the water pump power supply line is stopped; if the electricity consumption measured by the electric energy meter is not equal to the total electricity consumption at this time, an error is reported.

2. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 1 is characterized in that: The total electricity consumption of the water pump motor is calculated based on the total amount of water purchased by the farmer, including: The total amount of electricity consumption is obtained according to the total amount of water purchased and the water-to-electricity conversion coefficient obtained in advance; The water-to-electricity conversion coefficient is obtained based on the electricity consumption per unit water consumption.

3. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 1 or 2, characterized in that: The water pump power supply line is also connected in series with a first circuit breaker controlled by the management system, and the power supply to the water pump power supply line is stopped by controlling the first circuit breaker to open.

4. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 3 is characterized in that: A manually operated second circuit breaker is also connected in series to the water pump power supply line.

5. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 4, characterized in that: The first circuit breaker is connected in series between the electric energy meter and the water pump motor; the second circuit breaker is connected in series upstream of the electric energy meter.

6. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 5, characterized in that: Also includes: The anti-surge circuit is connected at the connection point between the second circuit breaker and the electric energy meter to protect the water and electricity combined control equipment for agricultural irrigation.

7. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 6, characterized in that: The surge protection circuit comprises: a surge protector and a grounding protection conductor which are sequentially connected in series.

8. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 7, characterized in that: The surge protection circuit also includes a fuse for protecting the surge protection circuit.

9. The complete set of water and electricity combined control equipment for agricultural irrigation according to claim 4, characterized in that: The management system is also used to supply power to the water pump power supply line by controlling the first circuit breaker to close after the farmer purchases water.

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