CN204707070U - A kind of make full use of solar energy from net well pump system - Google Patents

Abstract

This utility model discloses an off-grid well pump system that fully utilizes solar energy. The off-grid well pump system includes a solar photovoltaic power generation system, a solar thermoelectric power generation system, a control system, and an energy storage and power supply system. By fully utilizing the light and heat energy in solar energy, this utility model can convert more electrical energy through a common control system to store vanadium battery packs and power the well pump. Therefore, this utility model does not require external grid connection to power the off-grid well pump system, thus avoiding the adverse effects on grid peak shaving, frequency regulation, and power quality caused by the large-scale grid connection required by ordinary solar power well pump systems in the prior art. Therefore, this utility model has the advantages of high energy conversion efficiency, long service life, and strong practicality.

Description

An off-grid well pump system that makes full use of solar energy

technical field

The utility model relates to a solar off-grid well pump system, in particular to an off-grid well pump system which fully utilizes solar energy.

Background technique

Traditional well pumps are powered by the grid and cannot be used in areas without electricity, which affects people's daily life and work. Most of the areas lacking electricity and no electricity are sunny and dry areas. Using solar energy for power supply is a feasible solution. However, most of the current solar energy storage independent power supply systems use batteries as energy storage units, which have short energy storage time and large losses. , The service life is short, and the lead salt in the battery will seriously pollute the environment after being scrapped. At the same time, due to weather changes, the stability of solar power supply is poor, but the water pump needs a stable power supply.

There are mainly three types of solar well pumps on the market: 1. The well pump that directly connects the output of the solar panel to the DC motor. This type of DC motor is a permanent magnet DC motor. Due to the complex structure of the carbon brush, the DC motor is troublesome to maintain, and generally It is only used for small-power well pumps; 2. The electric energy of the solar panel is boosted by the inverter and then connected to the well pump of the ordinary asynchronous motor, but the efficiency of solar energy is not high, and only the light energy of the solar energy is used; 3. The electricity from solar panels is integrated into the grid; the above three types of electric energy storage efficiency is not high, and the power supply is unstable.

At the same time, traditional batteries are mostly lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, etc., which have the disadvantages of heavy pollution, short life, low efficiency, etc., while vanadium batteries have a special battery structure, which can be deeply discharged and charged at a high current density. Rapid, high efficiency, large capacity, long life, instant charging, high safety, great freedom of vanadium battery site selection, fully automatic closed operation, no pollution, etc., has a wide range of applications and can be used as a clean power generation system such as solar energy matching energy storage device.

At present, this type of water pump is mostly split in the assembly structure of the water pump body and the solar panel, and the solar panel is relatively fixed, so that the solar energy can only be better used for a certain period of time when it is facing the sun. Under normal circumstances, the utilization rate of solar energy is low, which cannot meet the long-term operation requirements of the well pump.

Utility model content

1. Technical problems to be solved

The purpose of this utility model is to solve the above-mentioned problems existing in the prior art, and to provide an off-grid well pump system that makes full use of solar energy, which makes full use of the light energy and The thermal energy is used for power generation, so that more electric energy can be converted to power the well pump. Therefore, the utility model avoids the peak-shaving and frequency-regulation of the power grid in the prior art due to the need for large-scale grid-connection of the common solar power generation well-pump system. and power quality are adversely affected.

2. Technical solution

In order to solve the above technical problems, the utility model provides an off-grid well pump system that makes full use of solar energy. The off-grid well pump system includes: a solar photovoltaic power generation system that can use sunlight to generate electricity; A thermoelectric power generation system, the solar thermoelectric power generation system can use the heat radiated by the sun to generate electricity; a control system, the control system is connected with the solar photovoltaic power generation system and the solar thermoelectric power generation system, and the control system can control all The solar photovoltaic power generation system and the solar thermoelectric power generation system are controlled, and the generated power is processed and output; at the same time, each sensor signal is monitored and the operation of the well pump is controlled; the power storage and power supply system, The power storage and power supply system is connected with the control system, and the power storage and power supply system can store the output power of the control system, and supply power to the well pump and power consumption equipment of each system.

Wherein, in the above-mentioned off-grid well pump system that fully utilizes solar energy, the solar photovoltaic power generation system includes a square array of solar photovoltaic modules.

Among them, in the above-mentioned off-grid well pump system that makes full use of solar energy, the solar thermoelectric power generation system includes a thermoelectric power generation module, a solar heat collector, an evaporator, a heat dissipation module, a thermal oil circulation pump, an incubator, a water tank, a circulation The water pump and the cold water channel module, the solar heat collector, the evaporator, the heat dissipation module, the heat conduction oil circulation pump and the heat preservation box are connected in sequence through pipelines to form a heat conduction oil circulation loop, and the water tank, the circulation water pump and the cold water channel module are sequentially The cooling water circulation loop is formed by being connected by pipelines, and the heat dissipation module and the cold water channel module are connected with the thermoelectric power generation module.

Wherein, in the above-mentioned off-grid well pump system that makes full use of solar energy, a first electromagnetic valve and a first electronic thermometer are arranged on the pipeline connecting the solar heat collector and the incubator, and a first solenoid valve and a first electronic thermometer are connected to the solar heat collector. A second electromagnetic valve and a second electronic thermometer are arranged on the pipeline with the evaporator, and the first electromagnetic valve, the first electronic thermometer, the second electromagnetic valve and the second electronic thermometer are all connected to the control system.

Wherein, in the above-mentioned off-grid well pump system that makes full use of solar energy, the solar heat collector is connected to the heat conduction oil circulation pump through a pipeline, and after connecting the solar heat collector and the heat conduction oil circulation pump A third solenoid valve is provided on the pipeline, and the third solenoid valve is connected with the control system.

Wherein, in the above-mentioned off-grid well pump system that fully utilizes solar energy, a third electronic thermometer is provided on the pipeline connecting the cold water channel module and the water tank, and the third electronic thermometer is connected to the control system.

Among them, in the above-mentioned off-grid well pump system that makes full use of solar energy, the control system includes a controller and a microprocessor, and the controller is connected with the solar photovoltaic power generation system, solar thermoelectric power generation system, and power storage and power supply respectively. The system is connected, and the microprocessor is connected with the controller.

Wherein, in the above-mentioned off-grid well pump system that fully utilizes solar energy, the power storage and power supply system includes a rechargeable battery, an inverter and an AC power distribution cabinet, the rechargeable battery is connected to the controller, and the inverter The inverter is connected to the rechargeable battery, the AC power distribution cabinet is connected to the inverter, and the AC power distribution cabinet is connected to the well pump and the power consumption equipment of each system respectively.

Wherein, in the above-mentioned off-grid well pump system that fully utilizes solar energy, the inverter is also electrically connected to the control system.

Wherein, in the above-mentioned off-grid well pump system that fully utilizes solar energy, the rechargeable battery is a vanadium battery pack.

Three, the beneficial effect of the utility model

Compared with the prior art, the utility model is an off-grid well pump system that fully utilizes solar energy, which fully utilizes the light energy and heat energy in solar energy to generate electricity through the solar photovoltaic power generation system and solar thermoelectric power generation system, and generates electricity The electricity is controlled by the controller and the microprocessor to charge the rechargeable battery, and at the same time, the inverter converts the direct current output from the rechargeable battery or the controller into alternating current, and transmits the alternating current to the AC power distribution cabinet, that is Realize the power supply to the well pump and power-consuming equipment of each system through the AC power distribution cabinet. The utility model can realize the transformation and obtain more electric energy by making full use of the light energy and heat energy in the solar energy to store the vanadium battery pack and supply power to the well pump. Therefore, the utility model does not need to be connected to the power grid to supply power to the off-grid well pump system, that is, it avoids the peak regulation, frequency regulation and Power quality and other adverse effects, at the same time, the solar photovoltaic power generation system and the solar thermoelectric power generation system are controlled through a common control system, which can also save costs. Therefore, the utility model has high power conversion efficiency, long service life and practical strong advantage.

Description of drawings

Fig. 1 is the structural representation of the off-grid well pump system that fully utilizes solar energy of the utility model embodiment;

Fig. 2 is the structural representation of solar photovoltaic power generation system in the utility model;

Fig. 3 is the structural representation of solar thermoelectric power generation system in the utility model;

Labels in the figure:

1 is the square array of solar photovoltaic modules; 2 is the rechargeable battery; 3 is the controller; 4 is the microprocessor; 5 is the inverter; 6 is the AC power distribution cabinet; 7 is the system power consumption equipment; 8 is the first electronic Thermometer; 9 is the first solenoid valve; 10 is the solar heat collector; 11 is the second electronic thermometer; 12 is the third solenoid valve; 13 is the heat conduction oil circulation pump; 14 is the insulation box; 15 is the second solenoid valve; 16 is an evaporator; 17 is a cooling module; 18 is a thermoelectric power generation module; 19 is a cold water channel module; 20 is a third electronic thermometer; 21 is a water tank; 22 is a circulating water pump; 23 is a well pump.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

As shown in Figures 1 to 3, it provides an embodiment of an off-grid well pump system that makes full use of solar energy in the present invention. In this embodiment, the off-grid well pump system that makes full use of solar energy includes solar energy Photovoltaic power generation system, solar thermoelectric power generation system, control system and power storage and power supply system, the utility model controls the solar photovoltaic power generation system and solar thermoelectric power generation system through the control system to make full use of the light energy and thermal energy in solar energy to generate electricity, and converts The incoming electric energy is stored and supplied to the well pump through the electricity storage and power supply system, so that the well pump can use the directly converted electricity to work during the day, and can use the stored electricity to work at night.

In this embodiment, the solar photovoltaic power generation system includes a square array of solar photovoltaic modules 1, which can absorb light energy and convert it into electrical energy under the action of sunlight during the day; the control system includes a controller 3 and a microprocessor 4, the controller 3 is connected to the solar photovoltaic module square array 1, and the microprocessor 4 is connected to the controller 3; the power storage and power supply system includes a rechargeable battery 2, an inverter 5 and an AC power distribution cabinet 6, The rechargeable battery 2 is a vanadium battery pack, so it has the advantages of rapid charging, high efficiency, large capacity, long life, instant charging, high safety, large degree of freedom in site selection, automatic closed operation, and no pollution. The rechargeable battery 2 is connected to the controller 3. When the microprocessor 4 detects that the power generation voltage of the solar photovoltaic module array 1 reaches the system input requirements, the microprocessor 4 will send a signal to the controller 3, so that the controller 3 The rechargeable battery 2 is charged with the electric energy converted by the solar photovoltaic module array 1, and the charge and discharge of the rechargeable battery 2 are controlled by the controller 3 and the microprocessor 4 to prevent the rechargeable battery 2 from overcharging and discharging , prolong the service life of the rechargeable battery 2, and ensure the normal use of the rechargeable battery 2.

At the same time, the inverter 5 is connected to the rechargeable battery 2, and the AC power distribution cabinet 6 is connected to the inverter 5, that is, the inverter 5 converts the direct current output by the rechargeable battery 2 into alternating current and transmits it to the alternating current power distribution Box 6, the AC power distribution cabinet 6 is connected to the well pump 23 respectively, that is, the well pump 23 is powered by the AC power distribution box 6 . At the same time, the inverter 5 is also electrically connected to the controller 3, that is to say, when the light intensity is high during the day, the direct current converted by the solar photovoltaic module square array 1 can also pass through the inverter at the same time when charging the rechargeable battery 2. Converter 5 converts excess electricity into alternating current, and sends it to AC distribution box 6 to supply power to well pump 23, and at night, then directly converts the electricity stored in rechargeable battery 2 through inverter 5 into AC, and sent to the AC distribution box 6 to supply power to the well pump 23. Wherein, the controller 3, the microprocessor 4 and the inverter 5 are power consuming devices that are powered by some rechargeable batteries 2 throughout the day to ensure the normal operation of the system.

In this embodiment, as shown in Figure 3, the solar thermoelectric power generation system includes a thermoelectric power generation module 18, a solar heat collector 10, an evaporator 16, a heat dissipation module 17, a thermal oil circulation pump 13, an incubator 14, and a water tank 21 , circulating water pump 22 and cold water channel module 19, wherein, the solar heat collector 10, evaporator 16, cooling module 17, heat transfer oil circulation pump 13 and incubator 14 are connected in sequence through pipelines to form a heat transfer oil circulation loop. At the same time, a first electromagnetic valve 9 and a first electronic thermometer 8 are provided on the pipeline connecting the solar heat collector 10 and the incubator 14, and a first solenoid valve 9 and a first electronic thermometer 8 are arranged on the pipeline connecting the solar heat collector 10 and the evaporator 16 The second electromagnetic valve 15 and the second electronic thermometer 11, the first electromagnetic valve 9, the first electronic thermometer 8, the second electromagnetic valve 15 and the second electronic thermometer 11 are all connected to the controller 3, that is to say, the first electromagnetic valve can be controlled by controlling the first electromagnetic thermometer. The valve 9 and the second electromagnetic valve 15 can realize the communication of the whole heat conduction oil circulation circuit. In addition, the solar heat collector 10 is connected to the heat conduction oil circulation pump 13 through a pipeline, and a third solenoid valve 12 is arranged on the pipeline connecting the solar heat collector 10 and the heat conduction oil circulation pump 13. The three solenoid valves 12 are connected to the controller 3, that is, the solar collector 10, the heat conduction oil circulation pump 13 and the heat preservation box 14 are sequentially connected through pipelines to form a heat conduction oil preheating circuit. When the three solenoid valves 12 are opened, it can realize the preheating of the heat conduction oil in the pipeline.

At night or when the heat radiated by the sun is not strong, because the outside world does not have enough heat radiated by the sun, the first solenoid valve 9, the second solenoid valve 15, the third solenoid valve 12, and the heat conduction oil in the solar thermoelectric power generation system Circulation pump 1 and evaporator 16 are all in the closed state, and the first electronic thermometer 8 and the second electronic thermometer 11 are all in the working state. Slowly absorb heat, and correspondingly make the temperature detected by the second electronic thermometer 11 rise slowly. When the temperature detected by the second electronic thermometer 11 is higher than 28°, control the first solenoid valve 9 and the third solenoid valve 12 Open at the same time as the heat conduction oil circulation pump 13, at this time the heat conduction oil flows in the heat conduction oil preheating circuit formed by the solar heat collector 10, the heat conduction oil circulation pump 13 and the insulation box 14, to preheat; when the first The temperature detected by the electronic thermometer 8 and the second electronic thermometer 11 is all higher than 30°, and when the temperature difference between them is 2-5°, the third electromagnetic valve 12 is controlled to be closed, and the second electromagnetic valve 15 is opened to control evaporation simultaneously. The device 16 is started, and the heat conduction oil starts to flow in the solar heat collector 10, the evaporator 16, the cooling module 17, the heat conduction oil circulation pump 13 and the heat preservation box 14 to form a heat conduction oil circulation loop. During this process, the high temperature heat conduction The oil flows into the evaporator 16 through the pipeline to generate high-temperature heat-conducting oil vapor, and then the high-temperature heat-conducting oil vapor flows into the cooling module 17 from the outlet of the evaporator 16. At the same time, the high-temperature heat transfer oil vapor will flow from the outlet of the heat dissipation module 17 into the heat transfer oil circulation pump 13 to continue the heating cycle. When night falls and the temperature on the second electronic thermometer 11 is lower than 30°, the external sun cannot radiate enough heat to generate electricity, so at this time control the power consumption equipment in the solar thermoelectric power generation system such as the first solenoid valve 9 , the second solenoid valve 15, the third solenoid valve 12, the heat conduction oil circulation pump 1 and the evaporator 16, etc. are restored to the closed state to reduce power consumption.

At the same time, in the solar thermoelectric power generation system, the water tank 21, the circulating water pump 22 and the cold water channel module 19 are sequentially connected through pipelines to form a cold water circulation loop. When the second electromagnetic valve 15 is opened, the circulating water pump 22 is controlled to open at the same time, so that the cold water Circulate in the cold water circulation loop. The cold water channel module 19 is connected with the thermoelectric power generation module 18. After the cold water flows into the cold water channel module 19 from the outlet of the circulating water pump 22, the temperature of the cold water is transferred to the thermoelectric power generation module 18 in contact with the cold water channel module 19 through the cold water channel module 19. On the cold end conduction surface, after the cold water flows out from the cold water channel module 19, it enters the water tank 21 for circulation. As above, when the temperature on the second electronic thermometer 11 is lower than 30°, the external sun cannot radiate enough heat to generate electricity at this time, so at this time, the circulating water pump 22 in the solar thermoelectric power generation system is controlled to return to the closed state, so as to Reduce power consumption.

The thermoelectric power generation module 18 is connected to the controller 3. When the hot end conduction surface and the cold end conduction surface of the thermoelectric power generation module 18 respectively receive the heat transferred by the heat dissipation module 17 and the cold water channel module 19, the thermoelectric power generation module 18 will generate electricity, and The generated electricity is transmitted to the controller 3 to realize the charging of the rechargeable battery 2 controlled by the controller 3 and the microprocessor 4 . In this embodiment, the solar photovoltaic power generation system and the solar thermoelectric power generation system share the same integrated controller 3 and microprocessor 4, thereby simplifying the structure of the system and improving the practicability of the utility model.

In addition, as a preferred mode, a third electronic thermometer 20 is provided on the pipeline connecting the cold water channel module 19 and the water tank 21, the third electronic thermometer 20 is connected with the controller 3, and the third electronic thermometer 20 can detect the The temperature of the cooling water flowing out of the cold water channel module 19, that is, the temperature of the cold-end conduction surface of the thermoelectric power generation module 18, so this temperature can be used as the reference temperature, only when the temperature of the heat conduction oil entering the cooling module 17 is greater than this reference When the temperature reaches a certain level, that is, when the difference between the temperature displayed by the second electronic thermometer 11 and the temperature displayed by the third electronic thermometer 20 reaches a certain value, the solar thermoelectric power generation system starts to generate electricity.

In this embodiment, the first solenoid valve 9, the second solenoid valve 15, the third solenoid valve 12, the first electronic thermometer 8, the second electronic thermometer 11, the third electronic thermometer 20, the thermal The oil-conducting circulation pump 13, the evaporator 16 and the circulating water pump 22 together constitute the system power consumption equipment 7, and the AC power distribution cabinet 6 is respectively connected with each system power consumption equipment 7, that is, realizes the power consumption through the controller 3 and the microprocessor 4. Control can be realized to supply power to the corresponding system power consumption equipment 7, so that the corresponding system power consumption equipment 7 can work, so as to realize automatic power generation by using solar temperature difference, and reduce the power consumption of the entire system power consumption equipment 7, so as to enhance the power consumption of the system. Practicality of utility models.

The above are only preferred embodiments of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the technical principles of the present utility model. It should also be regarded as the protection scope of the present utility model.

Claims (10)

1. A kind of off-grid well pump system that makes full use of solar energy, it is characterized in that, described off-grid well pump system comprises: Solar photovoltaic power generation system, which is used to generate electricity by using sunlight; Solar thermoelectric power generation system, which is used to generate electricity by using the heat radiated by the sun; The control system is connected with the solar photovoltaic power generation system and the solar thermoelectric power generation system, and is used to control the solar photovoltaic power generation system and the solar thermoelectric power generation system, and process and export the generated electricity output, while also monitoring the sensor signals and controlling the operation of the well pump; and The electricity storage and power supply system is connected with the control system, and is used for storing the output electricity in the control system, and supplying power to the well pump (23) and power consumption equipment (7) of each system. 2. The off-grid well pump system making full use of solar energy according to claim 1, characterized in that, the solar photovoltaic power generation system comprises a solar photovoltaic module array (1). 3. The off-grid well pump system making full use of solar energy according to claim 1, characterized in that, the solar thermoelectric power generation system comprises a thermoelectric power generation module (18), a solar heat collector (10), an evaporator (16) , cooling module (17), thermal conduction oil circulating pump (13), heat preservation box (14), water tank (21), circulating water pump (22) and cold water channel module (19), described solar heat collector (10), The evaporator (16), heat dissipation module (17), heat conduction oil circulation pump (13) and incubator (14) are connected successively through pipelines to form a heat conduction oil circulation loop, and the water tank (21), circulation water pump (22) The cold water channel module (19) is connected with the cold water channel module (19) sequentially through pipelines to form a cold water circulation loop, and the heat dissipation module (17) and the cold water channel module (19) are connected with the thermoelectric power generation module (18). 4. The off-grid well pump system making full use of solar energy according to claim 3, characterized in that, the pipeline connecting the solar heat collector (10) and the incubator (14) is provided with a first electromagnetic valve (9) and the first electronic thermometer (8), the pipeline connecting the solar heat collector (10) and the evaporator (16) is provided with a second solenoid valve (15) and a second electronic thermometer (11) , the first electromagnetic valve (9), the first electronic thermometer (8), the second electromagnetic valve (15) and the second electronic thermometer (11) are all connected to the control system. 5. The off-grid well pump system that makes full use of solar energy according to claim 4, characterized in that, the solar heat collector (10) is connected to the heat conduction oil circulation pump (13) through pipelines, and at the connecting point A third solenoid valve (12) is arranged on the pipeline of the solar heat collector (10) and the heat conduction oil circulation pump (13), and the third solenoid valve (12) is connected with the control system. 6. The off-grid well pump system that makes full use of solar energy according to claim 3, characterized in that a third electronic thermometer (20) is provided on the pipeline connecting the cold water channel module (19) and the water tank (21) ), the third electronic thermometer (20) is connected with the control system. 7. the off-grid well pump system that fully utilizes solar energy according to claim 1, is characterized in that, described control system comprises controller (3) and microprocessor (4), and described controller (3) and The solar photovoltaic power generation system, the solar thermoelectric power generation system are connected with the electricity storage and power supply system, and the microprocessor (4) is connected with the controller (3). 8. The off-grid well pump system that makes full use of solar energy according to claim 1, wherein the power storage and power supply system includes a rechargeable battery (2), an inverter (5) and an AC power distribution cabinet ( 6), the rechargeable battery (2) is connected to the controller (3), the inverter (5) is connected to the rechargeable battery (2), and the AC power distribution cabinet (6) is connected to the inverter ( 5) are connected, and the AC power distribution cabinet (6) is respectively connected with the well pump (23) and the power consumption equipment (7) of each system. 9. The off-grid well pump system making full use of solar energy according to claim 8, characterized in that, the inverter (5) is also electrically connected to the control system. 10. The off-grid well pump system making full use of solar energy according to claim 8, characterized in that, the rechargeable battery (2) is a vanadium battery pack.